Nature teaches more than she preaches. There are no sermons in stones. It is easier to get a spark out of a stone than a moral.
John BurroughsNatural history is a matter of observation; it is a harvest which you gather when and where you find it growing. Birds and squirrels and flowers are not always in season, but philosophy we have always with us. It is a crop which we can grow and reap at all times and in all places and it has its own value and brings its own satisfaction.
John Burroughs