We have the choice to use the gift of our life to make the world a better place—or not to bother.
If you don't go through the tough times, you don't get to the good times.
The most exciting phrase to hear in science, the one that heralds new discoveries, is not 'Eureka!' but 'That's funny...'
The true genius shudders at incompleteness — and usually prefers silence to saying something which is not everything it ought to be.