Among animals, some learn to speak and sing; they remember tunes, and strike the notes as exactly as a musician. Others, for instance the ape, show more intelligence... would it be absolutely impossible to teach the ape a language? I do not think so.

Great and enduring civilizations like those of the Hindus and the Chinese were built upon this foundation and developed from it a discipline of self-knowledge which they brought to a high pitch of refinement both in philosophy and practice.

Conduct, practice, is the proof of doctrine, theory. "If any man will do His will - the will of Him that sent me," said Jesus, "he shall know of the doctrine, whether it be of God or whether I speak of myself" (John vii. 17); and there is a well known saying of Pascal: "Begin by taking holy water and you will end by becoming a believer." And pursuing a similar train of thought, Johann Jakob Moser, the pietist, was of the opinion that no atheist or naturalist had the right to regard the Christian religion as void of truth so long as he had not put it to the proof by keeping its precepts and commandments.

The old land is still the true love, the others are but pleasant infidelities.

So this is something... we see happening... in the war in Ukraine. A lot of people raise the question, "Why are Ukrainians resisting the Russian invasion as ferociously as they are?" and there's been a little bit of a debate over whether this is due to the fact that Ukrain is democratic, a liberal democracy, and Russia is not, or whether it's simply a fight over sovereignty... I think that that's a false dichotomy because you really don't fight for liberalism as an abstract principle. You fight for it as it is embedded in... your nation... From my... frequent visits to Ukraine... I believe... that's what's really going on, that Ukrainians want their sovereignty, but the reason they want it so desperately is that they want to have a free Ukraine and not Putin's Ukraine, not a... centralized dictatorship, and that's why they're willing to fight so tenaciously.

Of faith and morals, one cannot speak honestly for long without hurting feelings. Therefore, most people speak dishonestly of the most important subjects. Many recent philosophers prefer not to speak of them at all. But in some situations honesty is incompatible with silence.

Lamarck, sagacious as many of his views were, mingled them with so much that was crude and even absurd, as to neutralize the benefit which his originality might have effected had he been a more sober and cautious thinker…

Accumulate, accumulate! That is Moses and the prophets!

He lit a lamp in broad daylight and said, as he went about, "I am looking for a human."

The intolerant can be viewed as free-riders, as persons who seek the advantages of just institutions while not doing their share to uphold them.

Thus mathematics may be defined as the subject in which we never know what we are talking about, nor whether what we are saying is true.

The resolution of complex Facts into precise and measured partial Facts, we call the 'Decomposition of Facts'. This process is requisite for the progress of science, but does not necessarily lead to progress. The Conceptions by which Facts are bound together, are suggested by the sagacity of discoverers. But a supply of appropriate hypotheses cannot be constructed by rule, nor without inventive talent. The truth of tentative hypotheses must be tested by their application to facts. The discoverer must be ready, carefully to try his hypotheses in this manner, and to reject them if they will not bear the test, in spite of indolence and vanity.

Every rich man is avaricious, in my opinion.

Time, and reflection, and discussion, have produced their natural effect on minds eminently intelligent and candid. No intermediate shades of opinion are now left. There is no twilight. The light has been divided from the darkness. Two parties are ranged in battle array against each other. There is the standard of monopoly. Here is the standard of free trade; and by the standard of free trade I pledge myself to stand firmly.

To kill someone for committing murder is a punishment incomparably worse than the crime itself. Murder by legal sentence is immeasurably more terrible than murder by brigands.

I do not speak here of divine truths... because they are infinitely superior to nature: God alone can place them in the soul... I know that he has desired that they should enter from the heart into the mind, and not from the mind into the heart, to humiliate that proud power of reasoning that pretends to the right to be the judge of the things that the will chooses; and to cure this infirm will which is wholly corrupted by its filthy attachments.

There is one ethical principle, either you are preserving life generally, or you aren't. Preserving life in your ends and your means determines whether you are good or evil.

We are really no longer ourselves a part of nature at the moment when we notice, when we recognize, that we are a part of nature.

Tout existant naît sans raison, se prolonge par faiblesse et meurt par rencontre. Every existing thing is born without reason, prolongs itself out of weakness and dies by chance.

The poem is important, but not more than the people whose survival it serves...

Witness the tragic condition of Russia. The methods of State centralization have paralysed individual initiative and effort; the tyranny of the dictatorship has cowed the people into slavish submission and all but extinguished the fires of liberty; organized terrorism has depraved and brutalized the masses and stifled every idealistic aspiration; institutionalized murder has cheapened human life, and all sense of the dignity of man and the value of life has been eliminated; coercion at every step has made effort bitter, labour a punishment, has turned the whole of existence into a scheme of mutual deceit, and has revived the lowest and most brutal instincts of man. A sorry heritage to begin a new life of freedom and brotherhood.

People in new environments always produce the new preceptual modality without any difficulty or awareness of change. It is later that the psychic and social realignments baffle societies.

The worker's existence is thus brought under the same condition as the existence of every other commodity. The worker has become a commodity, and it is a bit of luck for him if he can find a buyer, And the demand on which the life of the worker depends, depends on the whim of the rich and the capitalists.

The way for a person to develop a [writing] style is (a) to know exactly what he wants to say, and (b) to be sure he is saying exactly that. The reader, we must remember, does not start by knowing what we mean. If our words are ambiguous, our meaning will escape him. I sometimes think that writing is like driving sheep down a road. If there is any gate open to the left or the right the readers will most certainly go into it.

Courtship is the time for sowing those seeds which will grow up ten years into domestic hatred.

Not to display anger or other emotions. To be free of passion and yet full of love.

In skating over thin ice our safety is our speed.

The love of God consists in an ardent desire to procure the general welfare, and reason teaches me that there is nothing which contributes more to the general welfare of mankind than the perfection of reason.

Since you cannot do good to all, you are to pay special regard to those who, by the accidents of time, or place, or circumstance, are brought into closer connection with you.

Whoever is a truly good man seeks a renown not by means of an ornament that does not belong to him but by means of his own virtue.

Then we may begin by assuming that there are three classes of men—lovers of wisdom, lovers of honor, lovers of gain?

If one has no vanity in this life of ours, there is no sufficient reason for living.

Never for a moment do we lay aside our mistrust of the ideals established by society, and of the convictions which are kept by it in circulation. We always know that society is full of folly and will deceive us in the matter of humanity. ... humanity meaning consideration for the existence and the happiness of individual human beings.

Supreme power rests in the will of all or of the majority.

Everything that happens is either endurable or not. If it's endurable, then endure it. Stop complaining. If it's unendurable . . . then stop complaining. Your destruction will mean its end as well.

If I had as clear an idea of ghosts, as I have of a triangle or a circle, I should not in the least hesitate to affirm that they had been created by God; but as the idea I possess of them is just like the ideas, which my imagination forms of harpies, gryphons, hydras, &c., I cannot consider them as anything but dreams, which differ from God as totally as that which is not differs from that which is.

The art of being wise is the art of knowing what to overlook.

To affirm that humans thrive in many different ways is not to deny that there are universal human values. Nor is it to reject the claim that there should be universal human rights. It is to deny that universal values can only be fully realized in a universal regime. Human rights can be respected in a variety of regimes, liberal and otherwise. Universal human rights are not an ideal constitution for a single regime throughout the world, but a set of minimum standards for peaceful coexistence among regimes that will always remain different.

One may discover the root of a Hindoo religion in his own private history, when, in the silent intervals of the day or night, he does sometimes inflict on himself like austerities with a stern satisfaction.

At the classical origins of philosophic thought, the transcending concepts remained committed to the prevailing separation between intellectual and manual labor to the established society of enslavement. ... Those who bore the brunt of the untrue reality and who, therefore, seemed to be most in need of attaining its subversion were not the concern of philosophy. It abstracted from them and continued to abstract from them.

Socrates reminds us that it is not the same thing, but almost the opposite, to understand religion and to accept it.

The body of all true religion consists, to be sure, in obedience to the will of the Sovereign of the world, in a confidence in His declarations, and in imitation of His perfections.

Is it for this purpose that we are strong-that we may have light burdens to bear?

As regards the objection that possibles are independent of the decrees of God I grant it of actual decrees (although the Cartesians do not at all agree to this), but I maintain that the possible individual concepts involve certain possible free decrees; for example, if this world was only possible, the individual concept of a particular body in this world would involve certain movements as possible, it would also involve the laws of motion, which are the free decrees of God; but these, also, only as possibilities. Because, as there are an infinity of possible worlds, there are also an infinity of laws, certain ones appropriate to one; others, to another, and each possible individual of any world involves in its concept the laws of its world.

And what can be more divine than the exhalations of the earth, which affect the human soul so as to enable her to predict the future ? And could the hand of time evaporate such a virtue? Do you suppose you are talking of some kind of wine or salted meat ?