"Nature has been for me, for as long as I remember, a source of solace, inspiration, adventure, and delight; a home, a teacher, a companion."

"As I see it, every day you do one of two things: build health or produce disease in yourself."

"Do not pursue what is illusory - property and position: all that is gained at the expense of your nerves decade after decade and can be confiscated in one fell night. Live with a steady superiority over life - don't be afraid of misfortune, and do not yearn after happiness; it is after all, all the same: the bitter doesn't last forever, and the sweet never fills the cup to overflowing."

"Refuse to be ill. Never tell people you are ill; never own it to yourself. Illness is one of those things which a man should resist on principle."