"I saw a monster today: a two-headed calf. It lived for only an hour, but I dissected it to see if God had given it two souls."

"The world is a book, and those who do not travel read only one page."

"I saw the infinite, all-knowing and all-powerful God from behind as he went away, and I grew dizzy. I followed his footsteps over nature's fields and saw everywhere an eternal wisdom and power, an ins…"

"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."

"The stinking corpse flower smells like a rotting corpse to attract carrion beetles and flesh flies, which are its pollinators. Nature is both beautiful and repulsive."