Unless you have the courage to analyze your mistakes you are bound to repeat them.

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

God, give us the grace to accept with serenity the things that cannot be changed, courage to change the things which should be changed, and the wisdom to distinguish the one from the other.

Two of the hardest tests in life: The patience to wait for the right moment and the courage to accept whatever you encounter.

Don't be afraid to give up the good to go for the great.

You must never be fearful about what you are doing when it is right.

I hope you live a life you're proud of. If you find that you are not, I hope you have the strength to start all over again.

Be bold. If you're going to make an error, make a doozy, and don't be afraid to hit the ball.

Feelings of worth can flourish only in an atmosphere where individual differences are appreciated, mistakes are tolerated, communication is open, and rules are flexible. The kind of atmosphere that is found in a nurturing family.

Constant effort and frequent mistakes are the stepping stones to genius.

The opposite is beneficial; from things that differ comes the fastest fairest attunement; all things are born through strife.

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

Any man can make mistakes, but only an idiot persists in his error.

I am quite sure now that often, very often, in matters concerning religion and politics a man's reasoning powers are not above the monkey's.

He who fears he shall suffer, already suffers what he fears.

Almost every significant breakthrough is the result of a courageous break with traditional ways of thinking.

The truth has no defense against a fool determined to believe a lie.

There is nothing more frightful than ignorance in action.

Plant seeds of expectation in your mind; cultivate thoughts that anticipate achievement. Believe in yourself as being capable of overcoming all obstacles and weaknesses.

Men who reject the responsibility of thought and reason can only exist as parasites on the thinking of others.

I do not fix problems. I fix my thinking. Then problems fix themselves.