Nothing that was worthy in the past departs; no truth or goodness realized by man ever dies, or can die.

I do not believe that science per se is an adequate source of happiness, nor do I think that my own scientific outlook has contributed very greatly to my own happiness, which I attribute to defecating twice a day with unfailing regularity.

And if it is grievous to be doomed one day to cease to be, perhaps it would be more grievous still to go on being always oneself, and no more than oneself, without being able to be at the same time other, without being able to be at the same time everything else, without being able to be all.

What a singular destiny has been that of this remarkable man! To be regarded in his own age as a classic, and in ours as a companion! To receive from his contemporaries that full homage which men of genius have in general received only from posterity! To be more intimately known to posterity than other men are known to their contemporaries!

Whatever you do, He will make good of it. But not the good He had prepared for you if you had obeyed him.

For two thousand years, Jesus has revenged himself on us for not having died on a sofa.

If what we are discussing were a point of law or of the humanities, in which neither true nor false exists, one might trust in subtlety of mind and readiness of tongue and in the greater experience of the writers, and expect him who excelled in those things to make his reasoning most plausible, and one might judge it to be the best. But in the natural sciences, whose conclusions are true and necessary and have nothing to do with human will, one must take care not to place oneself in the defense of error; for here a thousand Demostheneses and a thousand Aristotles would be left in the lurch by every mediocre wit who happened to hit upon the truth for himself. Therefore, Simplicio, give up this idea and this hope of yours that there may be men so much more learned, erudite, and well-read than the rest of us as to be able to make that which is false become true in defiance of nature.

Tragic paradox of freedom: the mediocre men who alone make its exercise possible cannot guarantee its duration.

A fool with a heart and no sense is just as unhappy as a fool with sense and no heart.

Every new discovery may be considered as a new species of manufacture, awakening moral industry and sagacity, and employing, as it were, new capital of mind.

The world would be astonished if it knew how great a proportion of its brightest ornaments-of those most distinguished even in popular estimation for wisdom and virtue-are complete sceptics in religion...

Civilization exists by geological consent, subject to change without notice.

Only it takes time to be happy. A lot of time. Happiness, too, is a long patience.

All ye shall be offended because of me this night: for it is written, I will smite the shepherd, and the sheep of the flock shall be scattered abroad. But after I am risen again, I will go before you into Galilee.

The basic paradox about sex is that it always seems to be offering more than it can deliver. A glimpse of a girl undressing through a lighted bedroom window induces a vision of ecstatic delight, but in the actual process of persuading the girl into bed, the vision somehow evaporates.

The utilitarian doctrine is, that happiness is desirable, and the only thing desirable, as an end; all other things being only desirable as means to that end.

Praise be to God with all due praise, and a prayer for Muhammad His chosen servant and apostle. The purpose of this treatise is to examine, from the standpoint of the study of the Law, whether the study of philosophy and logic is allowed by the Law, or prohibited, or commanded either by way of recommendation or as obligatory.

Understand that all the evils from which you suffer, you yourselves cause by yielding to the suggestions by which emperors, kings, members of parliament, governors, officers, capitalists, priests, authors, artists, and all who need this fraud of patriotism in order to live upon your labour, deceive you!

A robot must protect its own existence as long as such protection does not conflict with the First or Second Laws.

...God commanded in the law [Deut. 22:22-24] that adulterers be stoned . . . The temporal sword and government should therefore still put adulterers to death . . . Where the government is negligent and lax, however, and fails to inflict the death penalty, the adulterer may betake himself to a far country and there remarry if he is unable to remain continent. But it would be better to put him to death, lest a bad example be set . . .

It is a thorny undertaking, and more so than it seems, to follow a movement so wandering as that of our mind, to penetrate the opaque depths of its innermost folds, to pick out and immobilize the innumerable flutterings that agitate it.

Let him who seeks continue seeking until he finds. When he finds, he will become troubled. When he becomes troubled, he will be astonished, and he will rule over the All.

The Spirit of the Lord is on me, because he has anointed me to proclaim good news to the poor. He has sent me to proclaim freedom for the prisoners and recovery of sight for the blind, to set the oppressed free, to proclaim the year of the Lord's favor.

Ordinary language is totally unsuited for expressing what physics really asserts, since the words of everyday life are not sufficiently abstract. Only mathematics and mathematical logic can say as little as the physicist means to say.

Simplify the social system, in the manner which every motive, but those of usurpation and ambition, powerfully recommends; render the plain dictates of justice level to every capacity; remove the necessity of implicit faith; and we may expect the whole species to become reasonable and virtuous.

I don't believe in flying saucers... The energy requirements of interstellar travel are so great that it is inconceivable to me that any creatures piloting their ships across the vast depths of space would do so only in order to play games with us over a period of decades.

Many counterrevolutionary books have been written in favor of the Revolution. But Burke has written a revolutionary book against the Revolution.

It seems to me as good as certain that we cannot get the upper hand against England. The English - the best race in the world - cannot lose! We, however, can lose and shall lose, if not this year then next year. The thought that our race is going to be beaten depresses me terribly, because I am completely German.

When some one boasted that at the Pythian games he had vanquished men, Diogenes replied, "Nay, I defeat men, you defeat slaves."

Why dost thou not retire like a guest sated with the banquet of life, and with calm mind embrace, thou fool, a rest that knows no care?

Sometimes, because my position has not been made clear enough, people think I'm a sort of radical anarchist who has an absolute hatred of power. No! What I am trying to do is to approach this extremely important and tangled phenomenon in our society, the exercise of power, with the most reflective, and I would say prudent attitude. Prudent in my analysis, in the moral and theoretical postulates I use: I try to figure out what's at stake. But to question the relations of power in the most scrupulous and attentive manner possible, looking into all the domains of its exercise, that's not the same thing as constructing a mythology of power as the beast of the apocalypse.

The oppression of a majority by a minority, and the demoralization inevitably resulting from it, is a phenomenon that has always occupied me and has done so most particularly of late.

Adapt yourself to the environment in which your lot has been cast, and show true love to the fellow-mortals with whom destiny has surrounded you.

I know of nothing more terrible than the poor creatures who have learned too much. Instead of the sound powerful judgement which would probably have grown up if they had learned nothing, their thoughts creep timidly and hypnotically after words, principles and formulae, constantly by the same paths. What they have acquired is a spider's web of thoughts too weak to furnish sure supports, but complicated enough to provide confusion.

It cannot at this time be too often repeated; line upon line; precept upon precept; until it comes into the currency of a proverb, To innovate is not to reform.

I am the door: by me if any man enter in, he shall be saved, and shall go in and out, and find pasture. The thief cometh not, but for to steal, and to kill, and to destroy: I am come that they might have life, and that they might have it more abundantly. I am the good shepherd: the good shepherd giveth his life for the sheep.

Man must not only make himself: the weightiest thing he has to do is to determine what he is going to be. He is causa sui to the second power.

Nature has pointed out a mixed kind of life as most suitable to the human race, and secretly admonished them to allow none of these biases to draw too much, so as to incapacitate them for other occupations and entertainments. Indulge your passion for science, says she, but let your science be human, and such as may have a direct reference to action and society. Abstruse thought and profound researches I prohibit, and will severely punish, by the pensive melancholy which they introduce, by the endless uncertainty in which they involve you, and by the cold reception which your pretended discoveries shall meet with, when communicated. Be a philosopher; but, amidst all your philosophy, be still a man.

The man of science who commits himself to even one statement which turns out to be devoid of good foundation loses somewhat of his reputation among his fellows, and if he be guilty of the same error often he loses not only his intellectual, but his moral standing among them. For it is justly felt that errors of this kind have their root rather in the moral than in the intellectual nature.

Fear? If I have gained anything by damning myself, it is that I no longer have anything to fear.

An arrow has one motion and the mind another. Even when pausing, even when weighing conclusions, the mind is moving forward, toward its goal. (Hays translation) VIII, 60

Challenge, and not desire, lies at the heart of seduction.

Shut out the evil love of the world, that you may be filled with the love of God. You are a vessel that was already full: you must pour away what you have, that you may take in what you have not.

He seldom or never spoke except actually to convey an idea. Measured by quantity of words, he was a talker of fully average copiousness; by extent of meaning communicated, he was the most copious I have listened to. How in few sentences he would sketch you off an entire biography, an entire object or transaction, keen, clear, rugged, genuine, completely rounded In! His words came direct from the heart by the inspiration of the moment.

One unscrupulous distortion of the truth tends to beget other and opposite distortions.

There's a bit of testicle at the bottom of our most sublime feelings and our purest tenderness.