I put these quotes on my senior page of my yearbook. I hope they help to brighten your day.

"Some people come into our livees, make footprints in our hearts, and we are never the same." - Anonymous

"Live, grow stronger, fight another day." -Methos (Highlander: The Series)

"The art of teaching is the art of assisting discovery." -Mark Van Doren

"To know others is wisdom, To know one's self is enlightenment." - Tao Te Ching

"Shoot for the moon. Even if you miss, you'll land among the satrs." -Les Brown

"I think, therefore I am." -Decartes

"It is only with the heart that one can see rightly; what is essential is invisible to the eye." -Antoine de Saint-Exupery

"A happy home is a happy life." -Anonymous

"The real voyage of discovery consists not in seeking new landscapes, but in having new eyes." -Marcel Proust

"To err is human. To really foul things up requires a computer." -Anonymous

"I laugh, and my laughter is not within me;
I burn and the burning is not seen outside." -Sir Tomas Mallory

"If you're afraid of the dark, remember the night rainbow.
If there is no happy ending, make one out of cookie dough." -Cooper Edens

"Learn from yesterday, live for today, hope for tomorrow." -Anonymous

"Your just jealous because the voices are talking to me." -Anonymous

"A true friend is kind behind your back." -Anonymous
The other version I've heard (not so optimistic) "A true friend stabs you in the front." - Anonymous

Here are some quotes of my own:
"To life, love, and living like it's your last day on Earth - the only way to truly live."

"When you've hit rock bottom, you've got nowhere to go but up."

"Curiousity may have killed the cat, but it didn't hold the gun."