All persecution is a sign of fear; for if we did not fear the power of an opinion different from our own, we should not mind others holding it.

What are so mysterious as the eyes of a child?

Truth is its own defense.

A blossom must break the sheath it has been sheltered by.

This is the real tragedy of mankind, that until now the spirit of man has not been able to free itself, even along the path of its own development, from the tentacles of self-deception.

Knowledge cannot be changed, but the use to which it may be put can very easily be changed.

... not being liked has a certain virtue about it, if the reason for the dislike does not lie in yourself!