“Between every two pines is a doorway to a new world.”

“The finest of the glacier meadow gardens lie ...imbedded in the upper pine forests like lakes of light.”

“All the world was before me and every day was a holiday, so it did not seem important to which one of the world's wildernesses I first should wander.”

“Few places in this world are more dangerous than home. Fear not, therefore, to try the mountain passes. They will kill care, save you from deadly apathy, set you free, and call forth every faculty into vigorous, enthusiastic action.”

“I never saw a discontented tree. They grip the ground as though they liked it, and though fast rooted they travel about as far as we do. They go wandering forth in all directions with every wind, going and coming like ourselves, traveling with us around the sun two million miles a day, and through space heaven knows how fast and far!”

“C. albus...I think the very loveliest of all the lily family,- a spotless soul, plant saint, that every one must love and so be made better. It puts the wildest mountaineer on his good behavior. With this plant the whole world would seem rich though non other existed.”

“Every hidden cell is throbbing with music and life, every fiber thrilling like harp strings.”