Learning is a good medicine: but no medicine is powerful enough to preserve itself from taint and corruption independently of defects in the jar that it is kept in. One man sees clearly but does not see straight: consequently he sees what is good but fails to follow it; he sees knowledge and does not use it.
Michel de MontaigneThere is a certain consideration, and a general duty of humanity, that binds us not only to the animals, which have life and feeling, but even to the trees and plants. We owe justice to people, and kindness and benevolence to all other creatures who may be susceptible of it. There is some intercourse between them and us, and some mutual obligation.
Michel de Montaigne