To be individually righteous is the first of all duties, come what may to ones self, to one's country, to society, and to civilization itself.

Metaphysics may be, after all, only the art of being sure of something that is not so and logic only the art of going wrong with confidence.

Man is, perhaps, no more prone to war than he used to be and no more inclined to commit other evil deeds. But a given amount of ill will or folly will go further than it used to.

The famous balance of nature is the most extraordinary of all cybernetic systems. Left to itself, it is always self-regulated.

There is no conceivable human action which custom has not at one time justified and at another condemned.

There is no such thing as a dangerous woman; there are only susceptible men.

Nature takes no account of even the most reasonable of human excuses.