The prospect for the human race is sombre beyond all precedent. Mankind are faced with a clear-cut alternative: either we shall all perish, or we shall have to acquire some slight degree of common sense. A great deal of new political thinking will be necessary if utter disaster is to be averted.

To begin an affair of that kind now, and carry it on so long a time in form, is by no means a proper plan ... whatever assurances I may give her in private of my esteem for her, or whatever assurances I may ask in return from her, depend on it - they must be kept in private. Necessity will oblige me to proceed in a method which is not generally thought fair; that of treating with a ward before obtaining the approbation of her guardian. I say necessity will oblige me to it, because I never can bear to remain in suspense so long a time. If I am to succeed, the sooner I know it, the less uneasiness I shall have to go through. If I am to meet with a disappointment, the sooner I know it, the more of life I shall have to wear it off: and if I do meet with one, I hope in God, and verily believe; it will be the last.

Delay is preferable to error.

People travel to wonder at the height of mountains, at the huge waves of the sea, at the long courses of rivers, at the vast compass of the ocean, at the circular motion of the stars; and they pass by themselves without wondering.

A questioner asks: If human nature is evil, then where do ritual and rightness come from? I reply: ritual and rightness are always created by the conscious activity of the sages.

Investigate what is, and not what pleases.

This shows, perhaps, why we have tried to put all physical phenomena into the same frame. But that can not pass for a definition of simultaneity, since this hypothetical intelligence, even if it existed, would be for us impenetrable. It is... necessary to seek something else.

In every rebellion is to be found the metaphysical demand for unity, the impossibility of capturing it, and the construction of a substitute universe.

I believe that the abolition of private ownership of land and capital is a necessary step toward any world in which the nations are to live at peace with one another.

On the other hand, the cheapest form of pride is national pride; for the man affected therewith betrays a want of individual qualities of which he might be proud, since he would not otherwise resort to that which he shares with so many millions. The man who possesses outstanding personal qualities will rather see most clearly the faults of his own nation, for he has them constantly before his eyes. But every miserable fool, who has nothing in the world whereof he could be proud, resorts finally to being proud of the very nation to which he belongs. In this he finds compensation and is now ready and thankful to defend, ... all the faults and follies peculiar to it.

The inner music of things sounds only when you close your eyes.

Not wise does it seem to attempt comprehending and understanding a Human World without full perfected Humanity. No talent must sleep; and if all are not alike active, all must be alert, and not oppressed and enervated. As we see a future Painter in the boy who fills every wall with sketches and variedly adds colour to figure; so we see a future Philosopher in him who restlessly traces and questions all natural things, pays heed to all, brings together whatever is remarkable, and rejoices when he has become master and possessor of a new phenomenon, of a new power and piece of knowledge.

We are never without a pilot. When we know not how to steer, and dare not hoist a sail, we can drift. The current knows the way, though we do not. The ship of heaven guides itself, and will not accept a wooden rudder.

All human knowledge begins with intuitions, proceeds from thence to concepts, and ends with ideas.

Citizens of a Jeffersonian democracy can be as religious or irreligious as they please as long as they are not "fanatical." That is, they must abandon or modify opinion on matters of ultimate importance, the opinions that may hitherto have given sense and point to their lives, if these opinions entail public actions that cannot be justified to most of their fellow citizens.

Eternal vigilance is the price of knowledge.

Again, Amyclas the Heracleotean, one of Plato's familiars, and Menæchmus, the disciple, indeed, of Eudoxus, but conversant with Plato, and his brother Dinostratus, rendered the whole of geometry as yet more perfect. But Theudius, the Magnian, appears to have excelled, as well in mathematical disciplines, as in the rest of philosophy. For he constructed elements egregiously, and rendered many particulars more universal. Besides, Cyzicinus the Athenian, flourished at the same period, and became illustrious in other mathematical disciplines, but especially in geometry. These, therefore, resorted by turns to the Academy, and employed themselves in proposing common questions.

It happens as with cages: the birds without despair to get in, and those within despair of getting out.

Nothing, in fact, is as universal or as ancient as the iniquitous and absurd; truth and justice, on the contrary, are the least universal, the youngest features in the development of human society.

A stupid man's report of what a clever man says is never accurate, because he unconsciously translates what he hears into something that he can understand.

Aim at being loved without being admired.

We can be knowledgeable with other men's knowledge, but we cannot be wise with other men's wisdom.

'Form' or 'figure' is space limited by boundaries. Space has necessarily 'three' dimensions, length, breadth, depth; and no ethers which cannot be resolved into these.

I would rather sleep in the southern corner of a little country churchyard, than in the tombs of the Capulets.

The more you are a victim of contradictory impulses, the less you know which to yield to. To lack character - precisely that and nothing more.

All true metaphysics is taken from the essential nature of the thinking faculty itself, and therefore in nowise invented, since it is not borrowed from experience, but contains the pure operations of thought, that is, conceptions and principles à priori, which the manifold of empirical presentations first of all brings into legitimate connection, by which it can become empirical knowledge, i.e. experience. ...mathematical physicists were thus quite unable to dispense with such metaphysical principles...

My whole heart and soul are stirred and incensed against the Turks and Mohammed, when I see this intolerable raging of the Devil. Therefore I shall pray and cry to God, nor rest until I know that my cry is heard in heaven.

I am very fond of truth, but not at all of martyrdom.

To the rest of the Galaxy, if they are aware of us at all, Earth is but a pebble in the sky. To us it is home, and all the home we know.

A purely disembodied human emotion is a nonentity.

What makes our poetry so contemptible nowadays is its paucity of ideas. If you want to be read, invent. Who the Devil wouldn't like to read something new?

Pleasure is in itself a good; nay, even setting aside immunity from pain, the only good: pain is in itself an evil; and, indeed, without exception, the only evil; or else the words good and evil have no meaning. And this is alike true of every sort of pain, and of every sort of pleasure.

Hungary conquered and in chains has done more for freedom and justice than any people for twenty years. But for this lesson to get through and convince those in the West who shut their eyes and ears, it was necessary, and it can be no comfort to us, for the people of Hungary to shed so much blood which is already drying in our memories. In Europe's isolation today, we have only one way of being true to Hungary, and that is never to betray, among ourselves and everywhere, what the Hungarian heroes died for, never to condone, among ourselves and everywhere, even indirectly, those who killed them. It would indeed be difficult for us to be worthy of such sacrifices.

There are two distinct classes of men in the nation, those who pay taxes, and those who receive and live upon the taxes.

Today, status quo bias runs deep. Conservation biology is an ideology masquerading as a science. Many researchers seek to extend the tenets of conservation biology to humans. By contrast, a benevolent superintelligence might view Darwinian life on Earth as an infestation of biological malware and act accordingly. The amount of suffering caused by Homo sapiens is hard to quantify. But the suffering is immense and growing daily with the spread of industrialised animal abuse. Reply to "Why would someone want to end humanity?"

Surely if a single cell may, when subjected to certain influences, become a man in the space of twenty years; there is nothing absurd in the hypothesis that under certain other influences, a cell may, in the course of millions of years, give origin to the human race.

Childhood lasts all through life. It returns to animate broad sections of adult life.... Poets will help us to find this living childhood within us, this permanent, durable immobile world.

Were we directed from Washington when to sow and when to reap, we should soon want bread.

But though empires, like all the other works of men, have all hitherto proved mortal, yet every empire aims at immortality.

Through the emancipation of private property from the community, the State has become a separate entity, beside and outside civil society; but is it nothing more than the form of organization which the bourgeois necessarily adopt both for internal and external purposes, for the mutual guarantee of their property and interests.

Despise all those things which when liberated from the body you will not want; invoke the Gods to become your helpers.

The saying that a little knowledge is a dangerous thing is, to my mind, a very dangerous adage. If knowledge is real and genuine, I do not believe that it is other than a very valuable possession, however infinitesimal its quantity may be. Indeed, if a little knowledge is dangerous, where is the man who has so much as to be out of danger?

Man has been trained in the same way as animals. He has become an author, as they became beasts of burden.