Liberty a word without which all other words are vain.

The few have said, Think! The many have said, Believe! The first doubt was the womb and cradle of progress, and from the first doubt, man has continued to advance.

Why should we desire the destruction of human passions? Take passions from human beings and what is left? The great object should be not to destroy passions, but to make them obedient to the intellect. To indulge passion to the utmost is one form of intemperance - to destroy passion is another. The reasonable gratification of passion under the domination of the intellect is true wisdom and perfect virtue.

With soap, baptism is a good thing.

For thousands of years people have been trying to force other people to think their way. Did they succeed? No. Will they succeed? No. Why? Because brute force is not an argument.

The glory of science is, that it is freeing the soul, breaking the mental manacles, getting the brain out of bondage, giving courage to thought, filling the world with mercy, justice, and joy.

To give up your individuality is to annihilate yourself.