The only way to improve is to challenge yourself against the best.

讽刺是反思的快乐，也是智慧的喜悦。

The interest of the behaviorist in man's doings is more than the interest of the spectator—he wants to control man's reactions as physical scientists want to control and manipulate other natural phenomena.

逻辑是所有数学推理的基础。

最伟大的发现往往来自于冒险和跳出框框思考。