An ignorant person is, by the very fact of his or her ignorance, a very dangerous person.

The history of the world is the record of a man in quest of his daily bread and butter.

The foundation for a new era was laid but yesterday. The human was given its first chance to become truly civilised when it took courage to question all things and made 'knowledge and understanding' the foundation upon which to create a more reasonable and sensible society of human beings.

The arts are an even better barometer of what is happening in our world than the stock market or the debates in congress.

In history as in life it is success that counts. Start a political upheaval and let yourself be caught, and you will hang as a traitor. But place yourself at the head of a rebellion and gain your point, and all future generations will worship you as the Father of their Country.

A few drops of science will often disinfect an entire barrel full of ignorance and prejudice.

Life means progress, and progress means suffering.