真正的热情不知道限制或障碍。
La verdadera pasión no conoce límites ni obstáculos.
In mathematics, you don't understand things. You just get used to them.
If you're not failing every now and then, you're not doing anything very innovative.
可持续林业不是一种选择,而是我们的责任。
"The stories we tell ourselves are the ones that shape us."