I profess both to learn and to teach anatomy, not from books but from dissections.
NP完全性不仅仅是一个理论上的好奇心;它对实际计算有着深远的影响。
"Everything is a learning process: any time you fall down, it's just teaching you to stand up the next time."
在这个世界上,有些东西用石头是刻不来的。在我们的心中有块地方是关不住的,那块地方称为自由。