I don’t believe in failure because I don’t believe in giving up.
Every ton of ore we extract carries with it a responsibility to the future.
Just because you like it does not mean that the world will necessarily give it to you.
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.