Make me the the master of education, and I will undertake to change the world.

What is is what must be.

Indeed in general I hold that there is nothing truer than happiness, and nothing happier and sweeter than truth.

It is unworthy of excellent men to lose hours like slaves in the labor of calculation which could be relegated to anyone else if machines were used.

He who hasn't tasted bitter things hasn't earned sweet things.

The greatness of a life can only be estimated by the multitude of its actions. We should not count the years, it is our actions which constitute our life.

Music is a secret and unconscious mathematical problem of the soul.