The deepest definition of youth is life as yet untouched by tragedy.

If it were true what in the end would be gained? Nothing but another truth. Is this such a mighty advantage? We have enough old truths still to digest, and even these we would be quite unable to endure if we did not sometimes flavor them with lies.

An atheist is just somebody who feels about Yahweh the way any decent Christian feels about Thor or Baal or the golden calf. As has been said before, we are all atheists about most of the gods that humanity has ever believed in. Some of us just go one god further.

In the country of the blind the one-eyed man is king.

Bats ... present a range of activity and a sensory apparatus so different from ours that the problem I want to pose is exceptionally vivid (though it certainly could be raised with other species). Even without the benefit of philosophical reflection, anyone who has spent some time in an enclosed space with an excited bat knows what it is to encounter a fundamentally alien form of life.

Marriage is encouraged in China, not by the profitableness of children, but by the liberty of destroying them.

Since ancient times, philosophers have maintained that to strive too hard for one's own happiness is self-defeating.

The things that we can see with our physical eyes are mere shadows of reality. If they appear ugly and ill formed, then what must be the ugliness of the soul in sin, deprived of all light? The soul, like the body, can undergo transformation in appearance. In sin it appears as completely ugly to the beholder. In virtue it shines resplendently before God.

Generals are usually a conservative force who can be relied on to oppose social change.

Like everything metaphysical the harmony between thought and reality is to be found in the grammar of the language.

By far my greatest dread in life [...] is that (some variant of) the Everett interpretation of Quantum Mechanics is true. Dave's Diary, BLTC Research, May 1996

The assertion fallacy ... is the fallacy of confusing the conditions for the performance of the speech act of assertion with the analysis of the meaning of particular words occurring in certain assertions.

No matter how various the subject matter I write on, I was a science-fiction writer first and it is as a science-fiction writer that I want to be identified.

In place of the bourgeois society, with its classes and class antagonisms, shall we have an association, in which the free development of each is the condition for the free development of all.

A very few, as heroes, patriots, martyrs, reformers in the great sense, and men, serve the State with their consciences also, and so necessarily resist it for the most part; and they are commonly treated by it as enemies.

It is better to live under a tree in a jungle inhabited by tigers and elephants, to maintain oneself in such a place with ripe fruits and spring water, to lie down on grass and to wear the ragged barks of trees than to live amongst one's relations when reduced to poverty.

The only man for whom Hitler had "unqualified respect" was "Stalin the genius," and while in the case of Stalin and the Russian regime we do not... have the rich documentary material that is available for Germany, we nevertheless know since Khrushchev's speech before the Twentieth Party Congress that Stalin trusted only one man and that was Hitler.

Those who exalt themselves will be humbled, and those who humble themselves will be exalted.

A public can only arrive at enlightenment slowly. Through revolution, the abandonment of personal despotism may be engendered and the end of profit-seeking and domineering oppression may occur, but never a true reform of the state of mind. Instead, new prejudices, just like the old ones, will serve as the guiding reins of the great, unthinking mass. All that is required for this enlightenment is freedom; and particularly the least harmful of all that may be called freedom, namely, the freedom for man to make public use of his reason in all matters. But I hear people clamor on all sides: Don't argue! The officer says: Don't argue, drill! The tax collector: Don't argue, pay! The pastor: Don't argue, believe!

Only the person who has faith in himself is able to be faithful to others.

There is but one truly serious philosophical problem and that is suicide. Judging whether life is or is not worth living amounts to answering the fundamental question of philosophy. All the rest, whether or not the world has three dimensions, whether the mind has nine or twelve categories comes afterwards. These are games; one must first answer. And if it is true, as Nietzsche claims, that a philosopher, to deserve our respect, must preach by example, you can appreciate the importance of that reply, for it will precede the definitive act. These are facts the heart can feel; yet they call for careful study before they become clear to the intellect. If I ask myself how to judge that this question is more urgent than that, I reply that one judges by the actions it entails. I have never seen anyone die for the ontological argument. 

Men are disturbed, not by things, but by the principles and notions which they form concerning things.

None can be an impartial or wise observer of human life but from the vantage ground of what we should call voluntary poverty.

You cannot think without abstractions; accordingly, it is of the utmost importance to be vigilant in critically revising your modes of abstraction. It is here that philosophy finds its niche as essential to the healthy progress of society. It is the critic of abstractions. A civilisation which cannot burst through its current abstractions is doomed to sterility.

Liberating tolerance, then, would mean intolerance against movements from the Right, and toleration of movements from the Left.

It is not meet to take the children's bread, and to cast it to dogs.

I wanted certainty in the kind of way in which people want religious faith. I thought that certainty is more likely to be found in mathematics than elsewhere. But I discovered that many mathematical demonstrations, which my teachers expected me to accept, were full of fallacies, and that, if certainty were indeed discoverable in mathematics, it would be in a new field of mathematics, with more solid foundations than those that had hitherto been thought secure. But as the work proceeded, I was continually reminded of the fable about the elephant and the tortoise. having constructed an elephant upon which the mathematical world could rest, I found the elephant tottering, and proceeded to construct a tortoise to keep the elephant from falling. But the tortoise was no more secure than the elephant, and after some twenty years of very arduous toil, I came to the conclusion that there was nothing more that I could do in the way of making mathematical knowledge indubitable.

Science may be described as the art of systematic over-simplification - the art of discerning what we may with advantage omit.

The principles of logic and mathematics are true simply because we never allow them to be anything else. And the reason for this is that we cannot abandon them without contradicting ourselves, without sinning against the rules which govern the use of language, and so making our utterances self-stultifying. In other words, the truths of logic and mathematics are analytic propositions or tautologies.

Every religious practice is an exercise in attention. A temple is the highest degree of attention.

There are some defeats more triumphant than victories.

It may be expedient but it is not just that some should have less in order that others may prosper.

Doutbless, revenge is not always sweet, once it is consummated we feel inferior to our victim, or else we are tangled in the subtleties of remorse; so vengeance too has its venom, though it comes closer to what we are, to what we feel, to the very law of the self; it is also healthier than magnanimity. The Furies were held to antedate the gods, Zeus included. Vengeance before Divinity! This is the Major intuition of ancient mythology. p. 70.

Count all wickedness foreign and alien.

Cartoons drove the photo back to myth and dream screen.

:...Vienna is the origin of so many schools of its own which were dominant in the 1920s. And one of the most fundamental and influential, in which we all were partially caught, was logical positivism. In fact, Mises' brother, Richard von Mises, became one of the leading figures. Now he and I all grew up in this Ernst Mach philosophy that ultimately everything must be rationally justified...

Self-education is, I firmly believe, the only kind of education there is.

Whatever arises from a just situation by just steps is itself just.

Experience teaches only the teachable...

The Doctrine of Knowledge, apart from all special and definite knowing, proceeds immediately upon Knowledge itself, in the essential unity in which it recognises Knowledge as existing; and it raises this question in the first place - How this Knowledge can come into being, and what it is in its inward and essential Nature? The following must be apparent: - There is but One who is absolutely by and through himself, - namely, God; and God is not the mere dead conception to which we have thus given utterance, but he is in himself pure Life. He can neither change nor determine himself in aught within himself, nor become any other Being; for his Being contains within it all his Being and all possible Being, and neither within him nor out of him can any new Being arise.

If a man knows what it is right to do, he does not require a formal reason. And a person that has been thus trained, either possesses these first principles already, or can easily acquire them.

It is better to fall in with crows than with flatterers; for in the one case you are devoured when dead, in the other case while alive.

Nothing is so difficult as not deceiving oneself.

The consciousness of a general idea has a certain "unity of the ego" in it, which is identical when it passes from one mind to another. It is, therefore, quite analogous to a person, and indeed, a person is only a particular kind of general idea.

It is the nature of all greatness not to be exact.

The simple point which I am concerned to make is that where ultimate values are irreconcilable, clear-cut solutions cannot, in principle, be found. To decide rationally in such situations is to decide in the light of general ideals, the overall pattern of life pursued by a man or a group or a society.