Mistakes are forgivable if one has the courage to admit them.

There is nothing so absurd or ridiculous that has not at some time been said by some philosopher.

You will make all kinds of mistakes; but as long as you are generous and true, and also fierce, you cannot hurt the world or even seriously distress her.

Knowledge rests not upon truth alone, but upon error also.

Sometimes when you innovate, you make mistakes. It is best to admit them quickly, and get on with improving your other innovations.

Do not be embarrassed by your mistakes. Nothing can teach us better than our understanding of them. This is one of the best ways of self-education.

There will be obstacles. There will be doubters. There will be mistakes. But with hard work, there are no limits.