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。
Mathematics is not just a human invention; it has a deep reality that exists independently of us.
The goal of education is not to increase the amount of knowledge but to create the possibilities for a child to invent and discover, to create men who are capable of doing new things.
学习不仅仅是知识的积累，而是理解的转变。
我曾以为诗歌可以改变一切，可以改变历史并使人性化，我认为这种幻想对生活非常必要。
The true value of a forest cannot be measured in board feet alone.