“Disinterested love for all living creatures, the most noble attribute of man.”
Charles Darwin book The Descent of Man, and Selection in Relation to Sex
volume I, chapter III: "Comparison of the Mental Powers of Man and the Lower Animals — continued", page 105 http://darwin-online.org.uk/content/frameset?pageseq=118&itemID=F937.1&viewtype=image <br class="br">The Descent of Man (1871)