The biggest risk is not taking any risk.
The secret of getting ahead is getting started.
事情过后议论别人,身在局外议论局内人,是做学问的人最容易犯的毛病。在事后议论别人,往往将聪明人说得极其愚笨;身在局外议论局内的人,往往将困难的事情说得极其容易,这两种毛病都是由待人不忠诚、不宽容而引起的。
The essence of mathematics is not to make simple things complicated, but to make complicated things simple.