Human life is driven forward by its dim apprehension of notions too general for its existing language.

The only use of knowledge of the past is to equip us for the present.

Inventive genius requires pleasurable mental activity as a condition for its vigorous exercise

Routine is the god of every social system; it is the seventh heaven of business, the essential component in the success of every factory, the ideal of every statesman. The social machine should run like clockwork.

The absolute pacifist is a bad citizen; times come when force must be used to uphold right, justice and ideals.

Algebra is the intellectual instrument which has been created for rendering clear the quantitative aspects of the world.

Problems are only opportunities in disquise.