The woods are lovely, dark and deep. But I have promises to keep, and miles to go before I sleep.
Nature holds the key to our aesthetic, intellectual, cognitive and even spiritual satisfaction.
There are three principal means of acquiring knowledge... observation of nature, reflection, and experimentation. Observation collects facts; reflection combines them; experimentation verifies the result of that combination.
Even if one tree falls down it wouldn't affect the entire forest.
Autumn is a second spring when every leaf is a flower.