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。
一个试图教学而不激发学生学习欲望的教师,就像在冷铁上敲打。
Stay hungry, stay foolish.
I don't think you can ever really prepare for the loss of someone you love.