Paul Oppenheimer

“Very like leaves upon this earth are the generations of men—old leaves, cast on the ground by wind, young leaves the greening forest bears when spring comes in. So mortals pass; one generation flowers even as another dies away.”
― Homer

“No sane person should believe that something is subjective merely because it cannot be settled beyond controversy.”
― Hilary Putnam

“The gorilla study illustrates two important facts about our minds: we can be blind to the obvious, and we are also blind to our blindness.”
― Daniel Kahneman, Thinking, Fast and Slow

“No man is an island, entire of itself; every man is a piece of the continent, a part of the main. If a clod be washed away by the sea, Europe is the less, as well as if a promontory were, as well as if a manor of thy friend's or of thine own were: any man's death diminishes me, because I am involved in mankind, and therefore never send to know for whom the bells tolls; it tolls for thee.”
― John Donne, No man is an island – A selection from the prose