A clever man commits no minor blunders.
A life spent making mistakes is not only more honorable, but more useful than a life spent doing nothing.
A man should never be ashamed to own that he is wrong, which is but saying in other words that he is wiser today than he was yesterday.
A man who cannot make mistakes cannot do anything.
A man who never made a mistake, never made anything worth a darn.
A man whose errors take ten years to correct is quite a man.
A man's errors are his portals of discovery.
A mistake at least proves that somebody stopped talking long enough to DO something.
A person who never made a mistake never tried anything new.
All men make mistakes, but only wise men learn from their mistakes.
All wrong doing is done in the sincere belief that it is the best thing to do.
An error doesn't become a mistake until you refuse to correct it.
An error is the more dangerous in proportion to the degree of truth which it contains.
An old error is always more popular than a new truth.
Be aware that young people have to be able to make their own mistakes and that times change.
Consider every mistake you do make as an asset.
Do not fear mistakes — there are none.
Don't argue for other people's weaknesses. Don't argue for your own. When you make a mistake, admit it, correct it, and learn from it — immediately.
Don't be afraid to fail. Don't waste energy trying to cover up failure. Learn from your failures and go on to the next challenge. It's OK to fail. If you're not failing, you're not growing.
Don't be afraid to make a mistake. But make sure you don't make the same mistake twice.