The lessons of life.

"What I do today is important because I am paying a day of my life for it. What I accomplish must be worthwhile because the price is high."

"The heart has its reasons that the mind knows nothing of."

"The world is made for people who aren't cursed with self-awareness."

"A thick head can do as much damage as a hard heart."

"A person determined never to be wrong won't likely accomplish much."

"Love does not consist in gazing at each other, but in looking outward together in the same direction."

"There is no greater sorrow than to recall a time of happiness in misery."

"Life is a series of collisions with the future; it is not the sum of what we have been, but what we yearn to be."

"Life is all memory, except for the one present moment that goes by so quick you hardly catch it going."

"My grandfather once told me that there were two kinds of people: those who do the work and those who take the credit. He told me to try to be in the first group; there was much less competition."

"The lust for comfort murders the passions of the soul."

"Yesterday is a canceled check; tomorrow is a promissory note; today is the only cash you have. Spend it wisely."

"No problem is so formidable that you can't just walk away from it."

"Success is the ability to go from failure to failure without losing your enthusiasm."

"Resentment is like drinking poison and waiting for the other person to die."

"When you come to the edge of all the light you have, and you must take a step into the darkness of the unknown, believe that one of two things will happen to you--either there will be something solid for you to stand on or you will be taught how to fly."