We never fully grasp the import of any true statement until we have a clear notion of what the opposite untrue statement would be.

We are proud of a human nature that could be so passionately extreme, but we shrink from advising others to follow the example.

Much of what we call evil is due entirely to the way men take the phenomenon. It can so often be converted into a bracing and tonic good by a simple change of the sufferer's inner attitude from one of fear to one of fight; its string can so often depart and turn into a relish when, after vainly seeking to shun it, we agree to face about and bear it.

We do not sing because we are happy, we are happy because we sing.

No more fiendish punishment could be devised, were such a thing physically possible, than that one should be turned loose in society and remain absolutely unnoticed.

Men habitually use only a small part of the power which they actually possess.

In any project the important factor is your belief. Without belief, there can be no successful outcome.