健康的森林意味着健康的经济；两者密不可分。
释文：不了解事情的真相就高谈阔论，便是不明智；如果知道了而不谈，就 是不忠诚。
If you're afraid to fail then you're probably going to fail.
How far you go in life depends on your being tender with the young, compassionate with the aged, sympathetic with the striving and tolerant of the weak and strong. Because someday in your life you will have been all of these.
Nature is written in mathematical language.