"Love feels no burden, thinks nothing of trouble, attempts what is above its strength, pleads no excuse of impossibility for it thinks all things lawful for itself, and all things possible."

"All men commend patience, although few are willing to practice it."

"Without the way, there is no going without the truth, there is no knowing without the life, there is no living."

"First keep peace with yourself, then you can also bring peace to others."

"Writing fiction has developed in me an abiding respect for the unknown in a human lifetime and a sense of where to look for the threads, how to follow, how to connect, find in the thick of the tangle what clear line persists."

"Experience is the stern teacher that gives the examination before the lesson. Let this simple maxim guide your daily deeds — an essential principle for the reflective life."

"It is easier for a tutor to command than to teach."

"For the last several years and culminating in six months in orbit next year, I've been training for my third space flight. This one is almost in a category completely different than the previous two, specifically to live in on the space station for six months, to command a space ship and to fly a new rocket ship."