The world is perishing from an orgy of self-sacrificing.

But what man does out of despair, is not necessarily a key to his character. I have always thought that the real key is in that which he seeks for his enjoyment.

The [U.S.] Constitution is a limitation on the government, not on private individuals ... it does not prescribe the conduct of private individuals, only the conduct of the government ... it is not a charter for government power, but a charter of the citizen's protection against the government.

The right to agree with others is not a problem in any society; it is the right to disagree that is crucial. It is the institution of private property that protects and implements the right to disagree - and thus keeps the road open to man's most valuable attribute: the creative mind.

Learn to distinguish the difference between errors of knowledge and breaches of morality

The hardest thing to explain is the glaringly evident which everybody had decided not to see.

I know not if this earth on which I stand is the core of the universe or if it is but a speck of dust lost in eternity. I know not and I care not. For I know what happiness is possible to me on earth. And my happiness needs no higher aim to vindicate it. My happiness is not the means to any end. It is the end. It is its own goal. It is its own purpose.