"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.