追求数学真理需要直觉和严谨。

A story is a letter that the author writes to himself, to tell himself things that he would be unable to discover otherwise.

The possibilities are numerous once we decide to act and not react.

我们需要从一种获取-制造-浪费的经济转向一种再生型经济。

可持续性不是一种选择；它是任何希望在长期内蓬勃发展的企业的必要条件。