Profit without sustainability is short-term gain with long-term pain.
It is always good to have a problem that you cannot solve. It means you have something to work on.
夜晚是一位伟大的老师,但星星是它的课程。
在数学中,提出问题的艺术必须比解决问题更有价值。
I think of myself as somebody who from an early age knew I was resposible for myself, and I had to make good.
The true investor scarcely ever is forced to sell his shares, and at all other times he is free to disregard the current price quotation.