"To live is the rarest thing in the world. Most people exist, that is all."

The ability to be alone is the ability to love. It may look paradoxical to you, but it’s not. It is an existential truth: only those who can be alone are capable of love, of sharing, of going into the deepest core of another human being—without possessing the other, without becoming dependent on the other, without reducing the other to a thing, and without becoming addicted to the other.

Global challenges require global solutions.

The study of psychology is the study of life's strategies.

The great question which, in all ages, has disturbed mankind, and brought on them the greatest part of their mischiefs, has been, not whether there be power in the world, nor whence it came, but who should have it.

The market is a great teacher, but it charges a high tuition.

——二个叔父孙学成、孙观成早年均因为贫穷必须远赴他乡做工谋生，在孙出生前后因病去世，孙看到清朝绩弱不振，受到外国强敌欺侮，增加自己从事反清革命的动机