Sometimes we get sad about things and we don’t like to tell other people that we are sad about them. We like to keep it a secret. Or sometimes, we are sad but we really don’t know why we are sad, so we say we aren’t sad but we really are.

The bond market is the ultimate measure of market confidence.

The concept of infinity is both fascinating and perplexing.

“世界上最好和最美丽的东西是看不见甚至摸不着的——它们必须用心去感受。”

The test of a psychological idea is its life-enhancing power.