Liberty is the right to do what the law permits.

In the quest to understand quantum gravity, we are like children playing on the shore of a vast ocean, occasionally finding a smooth pebble or a pretty shell, while the great ocean of truth lies undiscovered before us.

"A child who reads will never be bored."

译文：听取多方面的意见才能明辨是非，只听信一方面的话就会分不清是非。

效率（的重要性）被过度强调了，而放空（的重要性）则被严重低估了。定期的周日安息、职业年假、度假出游、工作日中的茶歇、漫无目的的散步和离开工作的时间，对一切领域获得顶级成就都极其重要。最好的工作，需要有良好的休息作为保障。