Mathematics is a living subject, constantly evolving with new ideas and discoveries.
Every step you take in the wild is a step towards understanding yourself better.
任何政治制度的成功都取决于其提供繁荣和正义的能力。
Hope is a good thing, maybe the best of things, and no good thing ever dies.
El lenguaje no es sólo un medio de comunicación, es un modo de existencia.