"The most beautiful flower is the one that is most accurately drawn."

"Natura non facit saltus. (Nature makes no leaps.)"

"By a botanist I mean one who understands how to observe the genera of Nature. I judge unworthy of the name of botanist the meddlesome person who is indifferent to genera."

"I have done more for the advancement of natural history than anyone else."

"If you want to know yourself, study nature."