We stand guard over works of art, but species representing the work of aeons are stolen from under our noses

Conservation is a positive exercise of skill and insight, not merely a negative exercise of abstinence and caution.

One swallow does not make a summer, but one skein of geese, cleaving the murk of March thaw, is the Spring.

Hemispheric solidarity is new among statesmen, but not among the feathered navies of the sky.

I confess my own leisure to be spent entirely in search of adventure, without regard to prudence, profit, self improvement, learning, or any other serious thing.

To keep every cog and wheel is the first precaution of intelligent tinkering.

We stand guard over works of art, but species representing the work of aeons are stolen from under our noses