The greatest problem for mathematicians now is probably the Riemann Hypothesis.
出自先秦《荀子·非相》。赠人以有益之言，比赠人以金石珠玉更显珍贵。说明有益的建言对他人事业人生的助益作用。
The stock market is a device for transferring money from the impatient to the patient.
我是一个喜欢非标准的人。