让我们尝试教导慷慨和利他主义，因为我们天生自私。
Let us try to teach generosity and altruism, because we are born selfish.
In looking for someone to hire, you look for three qualities: integrity, intelligence, and energy. But the most important is integrity because if they don't have that, the other two qualities, intelligence and energy, are going to kill you.
The only way to learn mathematics is to do mathematics.