Truth lives, in fact, for the most part on a credit system

The gist of the matter is this: Every impression that comes in from without, be it a sentence which we hear, an object of vision, or an effluvium which assails our nose, no sooner enters our consciousness than it is drafted off in some determinate direction or other, making connection with the other materials already there, and finally producing what we call our reaction. The particular connections it strikes into are determined by our past experiences and the 'associations' of the present sort of impression with them.

Begin to be now what you will be hereafter.

Emotional occasions, especially violent ones, are extremely potent in precipitating mental rearrangements. The sudden and explosive ways in which love, jealousy, guilt, fear, remorse, or anger can seize upon one are known to everybody. . . . And emotions that come in this explosive way seldom leave things as they found them.

The first lecture in psychology that I ever heard was the first I ever gave.

When once a decision is reached and execution is the order of the day, dismiss absolutely all responsibility and care about the outcome.

We have to live today by what truth we can get today and be ready tomorrow to call it falsehood.