The soul is stronger than its surroundings.

Agisci come se quel che fai, facesse la differenza. La fa!

In order to disprove the assertion that all crows are black, one white crow is sufficient.

There is no worse lie than a truth misunderstood bu those who hear it.

Our volitional habits depend, then, first, on what the stock of ideas is which we have; and, second, on the habitual coupling of the several ideas with action or inaction respectively.

The teacher's prime concern should be to ingrain into the pupil that assortment of habits that shall be most useful to him throughout life. Education is for behavior, and habits are the stuff of which behavior consists.

Intelligence is a fixed goal with variable means of achieving it.