乐观是正常的,但一些幸运的人比我们其他人更乐观。
A good mathematician is someone who can see analogies between theorems; a great mathematician is someone who can see analogies between analogies.
水边的芦苇在夜晚披上寒霜,月色清冷,山色苍茫
我们都是古老遗传信息的临时容器。