In the history of the world the prize has not gone to those species which specialized in methods of violence, or even in defensive armor. In fact, nature began with producing animals encased in hard shells for defense against the ill of life. But smaller animals, without external armor, warm-blooded, sensitive, alert, have cleared those monsters off the face of the earth.

In a certain sense, everything is everywhere at all times. For every location involves an aspect of itself in every other location. Thus every spatio-temporal standpoint mirrors the world

It is a profoundly erroneous truism, repeated by all copy books and by eminent people when they are making speeches, that we should cultivate the habit of thinking of what we are doing. The precise opposite is the case. Civilization advances by extending the number of important operations which we can perform without thinking about them.

From the moment of birth we are immersed in action, and can only fitfully guide it by taking thought.

Error is the price we pay for progress.

Intelligence is quickness to apprehend as distinct form ability, which is capacity to act wisely on the thing apprehended.

That knowledge which adds greatness to character is knowledge so handled as to transform every phase of immediate experience.