The frequency with which a man experiences lust depends upon his own physical condition, whereas the occasion which rouse such feelings in him depend….

Many orthodox people speak as though it were the business of sceptics to disprove received dogmas rather than of dogmatists to prove them. This is, o….

Man is a rational animal—so at least I have been told. … Aristotle, so far as I know, was the first man to proclaim explicitly that man is a rational….

A happy life must be to a great extent a quiet life, for it is only in an atmosphere of quiet that true joy dare live..

Worry is a form of fear, and all forms of fear produce fatigue. A man who has learned not to feel fear will find the fatigue of daily life enormously….

Those who forget good and evil and seek only to know the facts are more likely to achieve good than those who view the world through the distorting m….

There are infinite possibilities of error, and more cranks take up fashionable untruths than unfashionable truths..

Neither a man nor a crowd nor a nation can be trusted to act humanely or to think sanely under the influence of a great fear..

When we look at a rock what we are seeing is not the rock, but the effect of the rock upon us..

The world in which we live can be understood as a result of muddle and accident; but if it is the outcome of deliberate purpose, the purpose must hav….

Change is scientific; progress is ethical; change is indubitable, whereas progress is a matter of controversy..

I believe four ingredients are necessary for happiness: health, warm personal relations, sufficient means to keep you from want, and successful work..

All religions are both harmful and untrue..

The secret to happiness is to face the fact that the world is horrible..

Protagoras did not know if the gods exist, but he held in any case they ought to be worshiped. Philosophy, according to him, had nothing edifying to ….

Pure mathematics consists entirely of assertions to the effect that, if such and such a proposition is true of anything, then suchand such another pr….

Life is nothing but a competition to be the criminal rather than the victim..

The legacy of Greece to Western philosophy is Western philosophy..

When all experts agree, you need to watch out..

I would never die for my beliefs because I might be wrong..

The sentiments of an adult are compounded of a kernel of instinct surrounded by a vast husk of education..