可持续性不仅仅是一个流行词;它是对未来世代的承诺。
You don't have to be perfect to inspire others.
数学不是沿着一条清理得很好的高速公路小心行进,而是进入一个陌生的荒野的旅程,探险者常常会迷路。
一个人需要相当的知识才能意识到自己的无知程度。
The human being is a most curious creature. He thinks he has a soul, but all he has is a body.