Compared to what we ought to be, we are only half awake. We are making use of only a small part of our physical and mental resources. Stating the thing broadly, the human individual thus lives far within his limits. He possesses power of various sorts which he habitually fails to use.

You do not sing because you're happy, you're happy because you sing.

The art of remembering is the art of thinking. When we wish to fix a new thing in either our own mind or a pupil's, our conscious effort should not be so much to impress and retain it as to connect it with something else already there. The connecting is the thinking; and, if we attend clearly to the connection, the connected thing will certainly be likely to remain within recall.

The emotions aren't always immediately subject to reason, but they are always immediately subject to action.

Why should we think upon things that are lovely? Because thinking determines life. It is a common habit to blame life upon the environment. Environment modifies life but does not govern life. The soul is stronger than its surroundings.

The greatest discovery of the 20th Century is that our attitude of mind determines our quality of life, not circumstances.

A new idea is first condemned as ridiculous and then dismissed as trivial, until finally, it becomes what everybody knows.