If you like music, how about: "A musician must make music, an artist must paint, a poet must write, if he is to be ultimately at peace with himself. What a man can be, he must be." -Abraham H. Maslow
If not, try:
"Live as if you were to die tomorrow, learn as if you were to live forever." -Gandhi
"All mankind is divided into three classes: those taht are immovable, those that are movable, and those that move." -Benjamin Franklin
"Be yourself. Everyone else is already taken." -Oscar Wilde
"I was born very far from where I'm supposed to be and I'm on my way home." -Bob Dylan
"People will forget what you said, people will forget what you did, but people will never forget how you made them feel." -Maya Angelou
"The meek shall inherit the earth; the brave will get the oceans."
"A ship in the harbor is safe, but that's not what ships are built for."
"Ambition is putting a ladder against the sky."
"You will do foolish things, but do them with enthusiasm."
"Don't waste your time on jealousy; sometimes you're ahead, sometimes you're behind; the race is long and in the end, it's only with yourself." -Baz Luhrman
"A brave heart and a courteous tongue: they shall carry thee far through the jungle, manling." from The Jungle Book by Rudyard Kipling
"You may be only one person in the world, but you may also be the world to one person."