In short, intelligence, considered in what seems to be its original feature, is the faculty of manufacturing artificial objects, especially tools to make tools, and of indefinitely varying the manufacture.

The present contains nothing more than the past, and what is found in the effect was already in the cause.

Some other faculty than the intellect is necessary for the apprehension of reality.

To ease another's burden, help to carry it.

The movement of the stream is distinct from the river bed, although it must adopt its winding course.

Men do not sufficiently realize that their future is in their own hands. Theirs is the task of determining first of all whether they want to go on living or not. Theirs is the responsibility, then, for deciding if they want merely to live, or intend to make just the extra effort required for fulfilling, even on this refractory planet, the essential function of the universe, which is a machine for the making of gods.

The only cure for vanity is laughter. And the only fault that's laughable is vanity.