A leader or a man of action in a crisis almost always acts subconsciously and then thinks of the reasons for his action

The seven wonders of the world: To see, to hear, to touch, to taste, to feel, to laugh, to love.

A subtle thought that is in error may yet give rise to fruitful inquiry that can establish truths of great value.

I know but one freedom and that is the freedom of the mind.

Play is the highest expression of human development in childhood.

You cannot teach a man anything, you can only help him find it within himself.

Nothing is easier than self-deceit.