Genius without discipline is like a ship without a rudder.

Maybe if we knew what other people were thinking ,we’d know that no one’s ordinary.we all deserve a standing ovation at least once in our lives.

教师是太阳底下最光辉的职业。

The future of liberal democracy depends on its ability to adapt to new challenges and to maintain the support of its citizens.

The essence of mathematics lies in its freedom.

市场不会因为你正确而奖励你，它会因为你盈利而奖励你。