You can obsess about serving your customers/audience/clients， or you can obsess about beating the competition. Both work， but of the two， obsessing about your customers will take you further.

One of the advantages of being old is that you can speak your mind without worrying about the consequences.

The only true voyage of discovery would be not to visit strange lands but to possess other eyes, to behold the universe through the eyes of another, of a hundred others.

Listen here. Human kindness can't be bought for pennies or silver. Kindness is kindness. Pennies and silver are pennies and silver. Can't mix the wheat with the chaff.

弦理论提供了一个框架，使得量子力学和广义相对论能够和谐共存。