The deepest principle in human nature is the craving to be appreciated.

沉默可以比言语更有力量。

The advantages found in history seem to be of three kinds， as they result either from the mere situation of the climate and country or from the form of government and of the character of the people， or from those finer principles and morals， which may be called the recommendations of philosophy.

I believe it's essential to understand the psychology of the market and the psychology of the individual investor.