【我和老樹的約定】摘錄自 A NEW TREE BIOLOGY AND DICTIONARY(June, 1989) Alex L. Shigo
Alex L. Shigo有現代樹醫之父的美名，在這本書P.338-339提到一段話，對照現今的產業環境，提供大家深思！
Nobody wants anybody to know he or she has ever done anything bad or wrong for trees. Especially when a great deal of profit was made doing the right (wrong?) things. Believe me, please, I am getting to the major problem we have now worldwide with trees. Many people have really hurt trees. Some have hurt trees because they did not understan⋯⋯d. That can be forgiven. Some have hurt trees because they really never thought about it, but they have not set out to hurt them or anything. They can be forgiven. Some have hurt trees because it meant a constant supply of profit. Dante has an inner circle chair for these people, and they know it. Still, some in this group need a way out. That is fine. Change. Adjust. Learn. Be brave enough to reexamine and adjust. Now we come to the remaining group that resists all for the sake of profit. They will never disappear. Sad. But, we must not spend too much time on this. A new tree biology is here, and the people who really want to help trees will do so. And, make a great deal of honest profit.
譯： 沒有人想讓任何人知道他曾經做過什麼對樹木有害的事，尤其在一個有利的約定說要做些好事（或壞事）成立之後，拜託相信我，我得到了一個影響全世界樹木的問題，很多人真的在傷害樹木，有些人是在傷害樹木但是他們卻不知道，那些可以被原諒，有些人傷害樹木是因為他們根本就沒有想過這個問題，但他們從不展示他們所做的任何事，他們也可以被原諒，有些人傷害樹木因為在計畫一個常量的利益供應，但丁有張內圈椅要給這些人，並且他們知道這件事。 這個團體得有些人需要解決之道，這樣很好，改變，調整，學習，勇敢的重新檢視和調整，他們將不會消失，但是我們不必花太多時間在這上面。 一個新的樹木生物學就在這裡，而真正想幫助樹木的人將會這麼做，還有，和誠實的利益立下約定。
A NEW TREE BIOLOGY AND DICTIONARY https://shigoandtrees.com/index.php?_a=viewProd&productId=3