The essence of computational complexity is to understand the limits of what can be computed efficiently.
真實(shí)永遠(yuǎn)超出我們的表達(dá)。
The test of a first-rate intelligence is the ability to hold two opposed ideas in mind at the same time and still retain the ability to function.
Home is not a place, it's a feeling.
Quality starts from the seed, not just the harvest.
The best time to plant a tree was 20 years ago; the second-best time is now.