Environmentalist Quotes and aphorisms about just John Muir ,, Bread without flesh is a good diet, as on many botanical excursions I have proved. Tea also may eas... Greta Thunburg Greta Thunburg Greta Thunburg Greta Thunburg Greta Thunburg Greta Thunburg Greta Thunburg John Ray David R. Brower