We can be sure that the greatest hope for maintaining equilibrium in the face of any situation rests within ourselves.
The most exciting phrase to hear in science, the one that heralds new discoveries, is not 'Eureka!' (I found it!) but 'That's funny ...'
When you want to believe in something, you also have to believe in everything that's necessary for believing in it.
Men are equal; it is not birth but virtue that makes the difference.
The most beautiful adventures are not those we go to seek.
He will always be a slave who does not know how to live upon a little.
'Never put off until tomorrow what you can do today.' Under the influence of this pestilent morality, I am forever letting tomorrow's work slop backwards into today's, and doing painfully and nervously today what I could do quickly and easily tomorrow.