The individual investor should act consistently as an investor and not as a speculator.

"Humor is the great thing, the saving thing. The minute it crops up, all our irritations and resentments slip away and a sunny spirit takes their place."

释义：学问不论年长年幼，应该以某一方面擅长的人为师。学无先后，达者为师，体现了学问应该是一个开放的、无大小之分的领域，重在能力而非地位或者身份。