The history of all hitherto existing society is the history of class struggles.
The right of nature... is the liberty each man hath, to use his own power, as he will himself, for the preservation of his own nature; that is to say, of his own life.
If you want to succeed, you must be willing to take risks and learn from failure.
The power of mathematics lies in its generality and abstraction.
"The most wonderful thing of all is to live in a world where there are so many wonders."
La vida es corta pero ancha.