No amount of experimentation can ever prove me right; a single experiment can prove me wrong.
There is nothing to fear except the persistent refusal to find out the truth, the persistent refusal to analyze the causes of happenings.
When we blindly adopt a religion, a political system, a literary dogma, we become automatons. We cease to grow.
Truth springs from argument amongst friends.
The great enemy of the truth is very often not the lie -- deliberate, contrived and dishonest -- but the myth -- persistent, persuasive and unrealistic
The beginning of wisdom is found in doubting; by doubting we come to the question, and by seeking we may come upon the truth.
The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge.
He that never changes his opinions, never corrects his mistakes, will never be wiser on the morrow than he is today.
The real searcher after truth will not receive the old because it is old, or reject the new because it is new. He will not believe men because they are dead, or contradict them because they are alive. With him an utterance is worth the truth, the reason it contains, without the slightest regard to the author. He may have been a king or serf -- a philosopher or servant, -- but the utterance neither gains nor loses in truth or reason. Its value is absolutely independent of the fame or station of the man who gave it to the world.
1. Bible, 2. Albert Einstein, 3. Dorothy Thompson, 4. Anaïs Nin, 5. David Hume, 6. John F. Kennedy, 7. Pierre Abelard, 8. Stephen Hawking, 9. Tryon Edwards, 10. Robert G. Ingersoll