Look at a day when you are supremely satisfied at the end. It's not a day when you lounge around doing nothing; it's a day you've had everything to do and you've done it.
意识的难题在于解释大脑中的物理过程如何以及为何产生主观体验。
The only thing that can stop you is you.
Theorems are the permanent literature of mathematics.
"The best stories are those that linger in your mind long after you've finished reading them."