市场组合是所有投资者都应持有的唯一风险组合。
Three things you need: The ability to not give up something till it works, the ability to give up something that does not work, and the trust in other people to help you distinguish between the two.
Civil law is what each people establishes for itself.
The only thing I'm sure of is that I know nothing.
The artist is a child of his time, but woe to him if he is also its disciple, or even its favorite.
Innovation in forestry begins with respect for nature.