Whether you think that you can, or that you can't, you are usually right.

Whether you believe you can do a thing or not, you're right

If there is any one secret of success, it lies in the ability to get the other person's point of view and see things from that person's angle as well as from your own.

It is all one to me if a man comes from Sing Sing or Harvard. We hire a man, not his history.

The question "Who ought to be boss?" is like as "Who ought to be the tenor in the quartet?" Obviously, the man who can sing tenor.

Whether you think you can, or you think you can't--you're right.