I constantly see people rise in life who are not the smartest, sometimes not even the most diligent, but they are learning machines. They go to bed every night a little wiser than they were when they got up and boy does that help, particularly when you have a long run ahead of you.

Keep your feet on the ground and keep reaching for the stars.

A building should appear to grow easily from its site.

Every ton of coal we extract carries equal weight in responsibility.

"I try to learn from every situation, whether it's positive or negative."

心理生活是一个整体，这一普遍说法在某种意义上可以被接受为真实的，即它是一个相互关联的整体。