Objective evidence and certitude are doubtless very fine ideals to play with, but where on this moonlit and dream-visited planet are they found?

Nature in her unfathomable designs had mixed us of clay and flame, of brain and mind, that the two things hang indubitably together and determine each other's being but how or why, no mortal may ever know.

Since you make evil or good by your own thoughts, it is your ruling of your thoughts which proves to be your principal concern.

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

Most men's friendships are too inarticulate.

Every way of classifying a thing is but a way of handling it for some particular purpose.

We must make automatic and habitual, as early as possible, as many useful actions as we can...in the acquisition of a new habit, we must take car to launch ourselves with as strong and decided initiative as possible. Never suffer an exception to occur till the new habit is securely rooted in your life.