尽管鸟的翅膀是完美的,但如果没有空气的支撑,它永远无法将鸟托起。事实是科学的空气。没有它们,科学工作者永远无法腾飞。
Productive thinking is characterized by the sudden appearance of the solution as an insight.
The future of forestry lies in technology, but it must serve nature, not exploit it.