You have to believe in yourself when no one else does.
If you're not failing occasionally, you're not pushing hard enough.
The most effective economic communities are founded on a shared ethical horizon, which includes a set of moral obligations that members of the community owe to one another.
I don't think you can ever stop learning. There's always something new to discover.
Every mathematical problem has a solution; it just takes time and effort to find it.
除了诱惑，我什么都能抵抗。