The greatest good you can do for another is not just to share your riches but to reveal to him his own.
War is never a solution it is an aggravation.
There's no regret. You can't regret. I mean I've felt regret but I've also...
One would have to have completely forgotten the history of science so as to not remember that the desire to know nature has had the most constant and the happiest influence on the development of mathematics.
