The silence of Marcel Duchamp is overrated.

"Freeing yourself was one thing, claiming ownership of that freed self was another."

The purpose of mental activity is successful living.

To feed the world, we must first learn to respect the limits of our planet.

对于劳动者来说，最大的幸福是有充足的物质享受。

对人骄傲无礼的人，不是有出息的人。骄傲，就是自满；自满，就是空虚。行事有了自满与空虚，做事就会被限制。