The young do not know enough to be prudent, and therefore they attempt the impossible, and achieve it, generation after generation.
成功建立在失败的基础之上。
健康的森林意味着健康的经济；两者密不可分。
No matter how good you get you can always get better, and that's the exciting part.
The time at our disposal each day is elastic; the passions we feel dilate it, those we inspire contract it; and habit fills up what remains.
The worst pain is not the pain itself, but the loneliness of suffering.