"The world is so empty if one thinks only of mountains, rivers & cities; but to know someone who thinks & feels with us, & who, though distant, is close to us in spirit, this makes the earth for us an inhabited garden."
"Difficulties increase the nearer we get to the goal."
"Es ist nicht genug, zu wissen, man muß auch anwenden; es ist nicht genug, zu wollen, man muß auch tun."
"If you've never eaten while crying you don t know what life tastes like."
"At the moment of commitment the entire universe conspires to assist you."
"Man is not born to solve the problem of the universe, but to find out what he has to do; and to restrain himself within the limits of his comprehension."