I have many, many favorite quotes. Indeed, I've collected 30,000 plus such quotes into 40 books. You can find my favorites at http://www.quotablebooks.com/bests.htm. Here are a few of my favorites:
When you pray, move your feet. — African proverb
Can you walk on water? You have done no better than a straw. Can you fly in the air? You have done no better than a bluebottle. Conquer your heart; then you may become somebody. — Ansari of Herat, hermit
Here is the test to find whether your mission on earth is finished. If you're alive, it isn't. — Richard Bach, author
The reason birds can fly and we cannot is simply that they have perfect
faith, for to have faith is to have wings. — James Matthew Barrie, children's author
Life begets life. Energy becomes energy. It is by spending oneself that one
becomes rich. — Sarah Bernhardt, actress
When you reach the end of all the light there is and you must step out into
the darkness, remember that two things may happen: You either will find
something to stand on or you will be taught how to fly. — Book of Edges
Kindness is a language the dumb can speak, and
the deaf can hear and understand. — Christian Bovee
If your knees aren't green by the end of the day, you ought to seriously
re-examine your life. — Calvin of Calvin & Hobbes comic strip