I think it's possible for ordinary people to choose to be extraordinary.

Every mathematical problem has a solution; the challenge is finding it.

愚昧是最大的罪行，没有之一。

The present state of the system of nature is evidently a consequence of what it was in the preceding moment, and if we conceive of an intelligence which at a given instant comprehends all the relations of the entities of this universe, it could state the respective positions, motions, and general effects of all these entities at any time in the past or future.

我相信讲故事的力量可以改变世界。