To stumble twice against the same stone is a proverbial disgrace.

Pollution is nothing but the resources we are not harvesting. We allow them to disperse because we've been ignorant of their value.

Failure is unimportant. It takes courage to make a fool of yourself.

Great services are not canceled by one act or by one single error.

Do not be afraid of mistakes, providing you do not make the same one twice.

If something's important enough, you should try. Even if you - the probable outcome is failure.

Nature never excuses lapses.

The errors of great men are venerable because they are more fruitful than the truths of little men.

Man knows so much and does so little.

Dream is not that you see in the sleep; dream is that does not allow you to sleep.

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

Failure cannot cope with persistence.

One of the most common causes of failure is the habit of quitting when one is overtaken by temporary defeat.

Failing to prepare is preparing to fail.

Failure is not a single, cataclysmic event. You don't fail overnight. Instead, failure is a few errors in judgement, repeated every day.

A person should not be too honest. Straight trees are cut first and honest people are screwed first.

Failure is simply an opportunity to begin again, this time more intelligently.

You will soon break the bow if you keep it always stretched.

The wise say that our failure is to form habits: for habit is the mark of a stereotyped world.

The worst prison would be a closed heart.

The chief cause of failure and unhappiness is trading what you want most for what you want right now