Science should serve humanity, not the other way around.
科学应该为人类服务，而不是反过来。
"The moment you feel like giving up, think about why you held on for so long."
经济进步既依赖于新想法，也依赖于更好的实施。
"The colony is the place where the project of a new humanity is to be tested, where the dream of a world without borders is to be realized, where the dream of a world without races is to be realized, where the dream of a world without nations is to be realized, where the dream of a world without classes is to be realized, where the dream of a world without genders is to be realized."
The only way to learn mathematics is to do mathematics.