"The greatest pleasure of a gardener is to survey his work, and to admire the result of his own industry."

"If I have been of any service to the world, it is due to my love of animals and plants."

"It is not the business of a botanist to know all the plants, but to know how to find out what they are."

"A worm is a worm, and a man is a man. But if you compare a man to a worm, you will see that a man is only a worm."

"I have been as happy as a king, and happier."