Luther was guilty of two great crimes - he struck the Pope in his crown, and the monks in their belly.

By burning Luther's books you may rid your bookshelves of him, but you will not rid men's minds of him.

Man is to man either a god or a wolf.

Give light, and the darkness will disappear of itself.

Prevention is better than cure.

(Only by) the good influence of our conduct may we bring salvation in human affairs; or like a fatal comet we may bring destruction in our train