"The most dangerous phrase in business is 'We've always done it this way.'"

Pleasure is the greatest good, and we should seek it and avoid pain.

人生は、一度きりの旅だ。

A person may cause evil to others not only by his actions but by his inaction， and in either case， he is justly accountable to them for the injury.

世界需要更多的森林，而不是更少。