The causal framework is the foundation of scientific reasoning.
The mathematician's patterns, like the painter's or the poet's, must be beautiful; the ideas, like the colors or the words, must fit together in a harmonious way.
图书馆的存在本身就提供了最好的证据，证明我们对人类的未来仍可抱有希望。
事前考虑清楚，可是一旦到了该行动的时候，就要毫不犹豫，放手一搏。
我们都是自己过去的幽灵，徘徊在我们曾经熟悉的地方。
书籍的美妙之处在于它们可以带你去任何地方。
The truth is you don't know what is going to happen tomorrow. Life is a crazy ride, and nothing is guaranteed.