A schoolteacher or professor cannot educate individuals, he educates only species.

The greatest events occur without intention playing any part in them; chance makes good mistakes and undoes the most carefully planned undertaking. The world's greatest events are not produced, they happen.

If another Messiah was born he could hardly do so much good as the printing-press.

If all mankind were suddenly to practice honesty, many thousands of people would be sure to starve.

Everyone is a genius at least once a year.

Some people read only because they are too lazy to think.

The pleasures of the imagination are as it were only drawings and models which are played with by poor people who cannot afford the real thing.