"Writing a long and substantial book is like having a friend and companion at your side, to whom you can always turn for comfort and amusement, and whose society becomes more attractive as a new and widening field of interest is lighted in the mind."
"Attitude is a little thing that makes a big difference."
"If you cannot read all your books...fondle them---peer into them, let them fall open where they will, read from the first sentence that arrests the eye, set them back on the shelves with your own hands, arrange them on your own plan so that you at least know where they are. Let them be your friends; let them, at any rate, be your acquaintances."
"The price of greatness is responsibility."
"I am always ready to learn although I do not always like being taught."
"Healthy citizens are the greatest asset any country can have."