Plasticity, then, in the wide sense of the word, means the possession of a structure weak enough to yield to an influence, but strong enough not to yield all at once. Each relatively stable phase of equilibrium in such a structure is marked by what we may call a new set of habits.

It is our attitude at the beginning of a difficult task which, more than anything else, will affect its successful outcome.

It is only by risking our persons from one hour to another that we live at all.

Most people never run far enough on their first wind to find out they've got a second.

Your hopes, dreams and aspirations are legitimate. They are trying to take you airborne, above the clouds, above the storms, if you only let them.

Every time a resolve or a fine glow of feeling evaporates without bearing practical fruit is worse than a chance lost; it works to hinder future resolutions and emotions from taking the normal path of discharge. There is no more contemptible type of human character than that of the nerveless sentimentalist and dreamer, who spends his life in a weltering sea of sensibility and emotion, but who never does a manly concrete deed.

The greatest enemy of any one of our truths may be the rest of our truths.