The power of a computational model is not just in its ability to compute, but in its ability to generalize from specific instances.

Freedom is nothing else but a chance to be better.

Only a life lived for others is a life worthwhile.

解释：只是一种声音就没有听头，只是一种颜色就没有文采，只是一种味道就不成其为美味，只是一种事物就无法进行衡量比较。

Mathematics is not just about numbers, equations, computations, or algorithms: it is about understanding.