Mathematics is the most beautiful and most powerful creation of the human spirit.

The reason that the invisible hand often seems invisible is that it is often not there.

"Gratitude can transform common days into thanksgivings, turn routine jobs into joy, and change ordinary opportunities into blessings."

The moment the idea is admitted into society that property is not as sacred as the laws of God, and that there is not a force of law and public justice to protect it, anarchy and tyranny commence.

你需要耐心、自律和敏捷，才能承受损失和逆境而不发疯。

对邪恶宽容就是犯罪。