數(shù)學(xué)證明的美在于它的簡潔性和必然性。
The dinosaurs became extinct because they didn't have a space program. And if we become extinct because we don't have a space program, it'll serve us right!
思想之流，意識(shí)之流，總是在流動(dòng)。
一個(gè)講述物品的丟失、毀滅、消失的物品。它不講述自己。它講述別人。它會(huì)包含它們嗎？