"In computer science, we are always trying to find the balance between expressiveness and tractability."

I don't need anyone to hold my hand.

Probability theory is nothing but common sense reduced to calculation.

Treating a person to a meal never fails， and is so easy to do. It’s powerful with old friends and a great way to make new friends.

The city is the most complex work of art.

我不完美，但我始终是我自己。