正如几何学最自然的起点是数学点,在观察和自然历史中采用同样的方法也最真实、简单且富有教益。
As in geometry the most natural way of beginning is from a mathematical point, so is the same method in observations and natural history the most genuine, simple, and instructive.
永远不要把后天能做的事推迟到明天。
复杂性和矛盾不是要解决的问题,而是有待探索的机会。
The world changes when people decide to do things differently.
过去从未死去。它甚至不是过去。