因此，自爱是行动的必要原则。

对真理的热爱就体现在：知道怎样去发现和珍惜每一件事物的好处。

The discovery of the genetic code was a monumental step in understanding the molecular basis of life.

I didn't just jump back on the bike and win. There were a lot of ups and downs, good results and bad results, but this was a long-term plan.

A program that has not been tested does not work.