整个世界都是一系列的奇迹，但我们太习以为常了，以至于把它们称为普通的事物。
The art of teaching consists in large part of the ability to awaken the natural curiosity of young minds and to satisfy it with the nourishment of knowledge.
The love of democracy is that of equality.
The future of forestry lies in technology, but it must serve nature, not exploit it.