The total mental efficiency of a man is the resultant of the working together of all his faculties. He is too complex a being for any one of them to have the casting vote. If any one of them do have the casting vote, it is more likely to be the strength of his desire and passion, the strength of the interest he takes in what is proposed. Concentration, memory, reasoning power, inventiveness, excellence of the senses, all are subsidiary to this.

I have often thought the best way to define a man's character would be to seek out the particular mental or moral attitude in which, when it comes upon him, he felt himself most deeply and intensely active and alive. At such moments there is a voice inside which speaks and says: This is the real me!.

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

If you can change your mind, you can change your life.

If you only care enough for a result, you will almost certainly attain it. Only you must, then, really wish these things, and wish them exclusively, and not wish at the same time a hundred other incompatible things just as strongly.

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

Fatalism, whose solving word in all crises of behavior is All striving is vain, will never reign supreme, for the impulse to take life strivingly is indestructible in the race. Moral creeds which speak to that impulse will be widely successful in spite of inconsistency, vagueness, and shadowy determination of expectancy. Man needs a rule for his will, and will invent one if one be not given him.