The challenge in computational learning theory is to understand the capabilities and limitations of learning algorithms.
记忆是复杂的东西，与真相有关，但并非孪生。
如何道歉：快速、具体、真诚。
自由始终是并且仅仅是持不同思想者的自由。
I have to say to myself that some birds aren't very close. Their feathers are just too bright. When they fly away, you know it's a sin to lock them up, and you'll be inspired by them. Still, the place you live in is that much more drab and empty that they're gone. I think I really miss my friends.