Craving, not having, is the mother of a reckless giving of oneself.

A man is likely to mind his own business when it is worth minding. When it is not, he takes his mind off his own meaningless affairs by minding other people's business.

Anger is a prelude to courage.

There is a guilty conscience behind every brazen word and act and behind every manifestation of self-righteousness.

There is a perfect ant, a perfect bee, but man is perpetually unfinished...Moreover, the incurable unfinishedness keeps man perpetually immature, perpetually capable of learning and growing.

I can never forget that one of the most gifted, best educated nations in the world, of its own free will, surrendered its fate into the hands of a maniac.

Nature is a self-made machine, more perfectly automated than any automated machine. To create something in the image of nature is to create a machine, and it was by learning the inner working of nature that man became a builder of machines.