世界充满了故事，但所有的故事都是一个。
政治没有永恒的朋友，只有永恒的利益。
In mathematics, the simplest questions often lead to the most profound discoveries.
Three things are necessary for the salvation of man: to know what he ought to believe； to know what he ought to desire； and to know what he ought to do.
En cada verso hay un pedazo de mi vida, un fragmento de mi ser que se entrega al mundo.