Mathematics is not just a human invention; it has a deep reality that exists independently of us.
数学不仅仅是人类的发明;它具有一种独立于我们而存在的深刻现实。
If you don’t fail now and again, you’re not trying hard enough.
True leadership is measured by how you lift others up, not how high you climb.
Life is a dream for the wise, a game for the fool, a comedy for the rich, a tragedy for the poor.