受过教育的心灵的标志是能够思考一种思想而不必接受它。

When stocks are attractive, you buy them. Sure, they can go lower. I've bought stocks at $12 that went to $2, but then they later went to $30. You just don't know when you can catch the bottom.

释义：善于运用自己的才能，才能实现财富的积累。这句话强调才能与财富的关系，提醒人们要充分发挥自身优势。