森林的真正價(jià)值不能僅用木材體積來(lái)衡量；它的價(jià)值在于它所維持的生命。
The true value of a forest cannot be measured in board feet alone; its worth is in the life it sustains.
It is vain to talk of the interest of the community， without understanding what is the interest of the individual.
感謝一位改變了你生活的老師。
Mathematics is not about numbers, equations, computations, or algorithms: it is about understanding.
數(shù)學(xué)不是關(guān)于數(shù)字、方程、計(jì)算或算法的：它是關(guān)于理解的。