We are enriched by our reciprocate differences.

Books have the same enemies as people: fire, humidity, animals, weather, and their own content.

Whoever wants to accomplish great things must devote to a lot of profound thought to details.

The world acquires value only through its extremes and endures only through moderation; extremists make the world great, the moderates give it stability.

Beware of what you do best; its bound to be a trap.

The mind has transformed the world, and the world is repaying it with interest. It has led man where he had no idea how to go.

An intelligent woman is a woman with whom one can be as stupid as one wants.