“How can you do anything until you have seen everything,or as much as you can?”
“You never know how much you can do, until you try to do more than you can.”
“You can never be really sure of how much you believe anything until its truth or falsehood becomes a matter of life or death to you.”
“You must not think of how much you have done but of how much more you can do.”
“You can do anything, but not everything.”
“Security depends not so much upon how much you have, as upon how much you can do without. ”