“Intelligence is quickness to apprehend as distinct form ability, which is capacity to act wisely on the thing apprehended.”
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No period of history has ever been great or ever can be that does not act on some sort of high, idealistic motives, and idealism in our time has been shoved aside, and we are paying the penalty for it.
Civilization advances by extending the number of important operations which we can perform without thinking of them.
In formal logic, a contradiction is the signal of defeat, but in the evolution of real knowledge it marks the first step in progress toward a victory.
It is the business of the future to be dangerous and it is among the merits of science that it equips the future for its duties.