We have turned our backs on nature. She had guided us so accurately and appropriately, but I wanted to use her teachings to teach her a lesson. ——Montaigne

Only by obeying nature can we defeat nature. ——Darwin

If you want to be safe in life, you should have five things: first, clean air; second, clarified drinking water; third, drainage ditches; fourth, house sweeping; and fifth, sufficient sunlight.

——Nightingale