Wie man Freunde gewinnt. Die Kunst, beliebt und einflußreich zu werden

The ideas I stand for are not mine. I borrowed them from Socrates. I swiped them from Chesterfield. I stole them from Jesus. And I put them in a book. If you don't like their rules whose would you use?

People rarely succeed unless they have fun in what they are doing.

Most of the important things in the world have been accomplished by people who have kept on trying when there seemed to be no hope at all.