解釋：時機未到，就不能勉強行事；行事不探求事理，就不可能達到成功。
做數學就是探索一個思想的宇宙，唯一的限制是你的想象力。
The changes in our life must come from the impossibility to live otherwise than according to the demands of our conscience.
Ever tried. Ever failed. No matter. Try again. Fail again. Fail better.