If you're not stubborn， you'll give up on experiments too soon. And if you're not flexible， you'll pound your head against the wall and you won't see a different solution to a problem you're trying to solve.

I do gymnastics because I love it, not because I'm trying to be the best in the world.

"La literatura es el arte de la palabra, y la palabra es el instrumento del pensamiento."

Change is inevitable; how you respond defines your success.