A good hypothesis in science must have other properties than those of the phenomenon it is immediately invoked to explain, otherwise it is not prolific enough.

Human beings can alter their lives by altering their attitudes of mind.

I am only a philosopher, and there is only one thing that a philosopher can be relied on to do, and that is, to contradict other philosophers.

Every individual existence goes out in a lonely spasm of helpless agony.

Once you accept an idea, it's an idea whose time has come.

We have grown literally afraid to be poor. We despise anyone who elects to be poor in order to simplify and save his inner life. If he does not join the general scramble and pant with the money-making street, we deem him spiritless and lacking in ambition

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.