反馈的研究就是稳定性的研究。
Think wrongly, if you please, but in all cases think for yourself.
To be human is to be in conflict with oneself.
最好的投资往往是那些在当时看起来疯狂的项目。
The essence of mathematics lies in its freedom.
The most important thing you can do to achieve your goals is to make sure that as soon as you set them, you immediately begin to create momentum.