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

It is so human a book that I don't see how belief in its divine authority can survive the reading of it.

The mind, in short, works on the data it receives very much as the sculptor works on his block of stone.

Common sense and a sense of humor are the same thing, moving at different speeds. A sense of humor is just common sense, dancing.

If you believe that feeling bad or worrying long enough will change a past or future event, then you are residing on another planet with a different reality system.

The attitude of unhappiness is not only painful, it is mean and ugly. What can be more base and unworthy than the pining, puling, mumping mood, no matter by what outward ills it may have been engendered? What is more injurious to others? What less helpful as a way out of the difficulty? It but fastens and perpetuates the trouble which occasioned it, and increases the total evil of the situation. At all costs, then, we ought to reduce the sway of that mood; we ought to scout it in ourselves and others, and never show it tolerance.

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