"The meaning of life is to be found in the experience of living itself."

"If we were bees, ants, or Lacedaemonian warriors, to whom personal fear does not exist and cowardice is the most shameful thing in the world, warring would go on forever. But luckily we are only men —…"

"If you are hungry, you can eat a carrot. If you are thirsty, you can drink water. If you are cold, you can put on a coat. But what do you do if you are lonely?"

"The only way to do great work is to love what you do."

"What we observe as material bodies and forces are nothing but shapes and variations in the structure of space. Particles are just schaumkommen (appearances)!"