写作的行为是一种乐观的行为。

对于人的责任，在于对待自己的本性，也同样适用于对待其他事物的本性。

The rocks may be hard, but our resolve must be harder.

The complexity of viruses reminds us how much we still have to learn about biology.

Happiness is not the belief that we don't need to change; it is the realization that we can.

The rocks we extract today build the infrastructure of tomorrow.