Love shows itself more in adversity than in prosperity; as light does, which shines most where the place is darkest.

simplicity is the best sophistication

Truth was the only daughter of Time.

It vexes me greatly that having to earn my living has forced me to interrupt the work and to attend to small matters.

Many will think they may reasonably blame me by alleging that my proofs are opposed to the authority of certain men held in the highest reverence by their inexperienced judgments; not considering that my works are the issue of pure and simple experience.

Inequality is the cause of all local movements.

Art lives from constraints and dies from freedom.