I have read in books that we are called 'caged birds'. I cannot speak for others, but I had so much in this cage of mine that there was not room for it in the universe- at least that is what I then felt.
What has been done in the world - the works of genius - cost nothing. There is no painful effort, but it is the spontaneous flowing of the thought. Shakespeare made his Hamlet as a bird weaves its nest.
The only clear thing is that we humans are the only species with the power to destroy the earth as we know it. The birds have no such power, nor do the insects, nor does any mammal. Yet if we have the capacity to destroy the earth, so, too, do we have the capacity to protect it.
Let sinful bachelors their woes deplore; full well they merit all they feel, and more: unaw by precepts, human or divine, like birds and beasts, promiscuously they join.