I believe it's essential to understand the psychology of the market and the psychology of the investor.
Society can and does execute its own mandates， and if it issues wrong mandates instead of right， or any mandates at all in things with which it ought not to meddle， it practices a social tyranny more formidable than many kinds of political oppression， since， though not usually upheld by such extreme penalties， it leaves fewer means of escape， penetrating much more deeply into the details of life， and enslaving the soul itself.
最好是不失败，其次则是败了却还有办法成功，这才叫善于用人。
Science is the light that illuminates the darkness of ignorance.