"No, I don't give up, I'd have to dead or completely incapacitated."

"The journey of a thousand miles begins with a single step"

"It does not matter how slowly you go as long as you do not stop."

"If something is important enough, even if the odds are against you, you should still do it."

"Success consists of going from failure to failure without loss of enthusiasm."

"If you fell down yesterday, stand up today."

"Life is like riding a bicycle. To keep your balance, you must keep moving."

"If you have an important point to make, don't try to be subtle or clever. Use a pile driver. Hit the point once. Then come back and hit it again. Then hit it a third time - a tremendous whack."

"You will never reach your destination if you stop and throw stones at every dog that barks."

"I haven't failed. I've just found 10,000 ways that won't work."

"If you can't fly, then run. If you can't run, then walk. If you can't walk, then crawl. but whatever you do, you have to keep moving forward."