I deal with the obvious. I present, reiterate and glorify the obvious / because the obvious is what people need to be told.

Feeling sorry for yourself, and your present condition, is not only a waste of energy but the worst habit you could possibly have.

When dealing with people, remember you are not dealing with creatures of logic, but with creatures of emotion, creatures bristling with prejudice, and motivated by pride and vanity

Why talk about what we want? That is childish. Absurd. Of course, you are interested in what you want. You are eternally interested in it. But no one else is. The rest of us are just like you: we are interested in what we want.

How to win friends and influence people (title of book)

Really important goals are accomplished by people who will keep trying even when there seems to be no hope.