风格是非常个人的东西。它与时尚无关。时尚转瞬即逝,风格永存。
粒子的概念只是近似的,并且只有在动量较小的极限下才有意义。
I'm not afraid to speak my mind.
The greatest thing you'll ever learn is just to love and be loved in return.
The improvement of understanding is for two ends: first, our own increase of knowledge; secondly, to enable us to deliver that knowledge to others.
The only way to learn mathematics is to do mathematics.