Food security is the cornerstone of national security.

"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, where the dream of a world without religions is to be realized, where the dream of a world without money is to be realized."

生活是一系列无尽的重复，每一次都比上一次更无意义。

The PAC learning framework provides a formal way to quantify the learnability of a concept class.

"To paint is to pray with colors."

冒险是必要的，但经过计算的冒险才是天才之举。