First... a new theory is attacked as absurd; then it is admitted to be true, but obvious and insignificant; finally it is seen to be so important that its adversaries claim that they themselves discovered it.

We forget that every good that is worth possessing must be paid for in strokes of daily effort. We postpone and postpone until those smiling possibilities are dead... By neglecting the necessary concrete labor, by sparing ourselves the little daily tax, we are positively digging the graves of our higher possibilities.

Impulse without reason is enough, and reason without impulse is a poor makeshift.

The true is the name of whatever proves itself to be good in the way of belief, and good, too, for definite, assignable reasons.

The desire to gain wealth and the fear to lose it are our chief breeders of cowardice and propagators of corruption.

We must not just patch and tinker with life. We must keep renewing it. Embrace novelty and uniqueness.

Whilst part of what we perceive comes through our senses from the object before us, another part (and it may be the larger part) always comes out of our own mind.