Be moral. Be brave. Be a heart-whole man, strictly moral, brave unto desperation. Don't bother your head with religious theories. Cowards only sin, brave men never, no, not even in mind.
Every man is said to have his peculiar ambition. Whether it be true or not, I can say for one that I have no other so great as that of being truly esteemed of my fellow men, by rendering myself worthy of their esteem.
Yes, we now have to divide up our time like that, between politics and our equations. But to me our equations are far more important, for politics are only a matter of present concern. A mathematical equation stands forever.