The Only Time You Mustn't Fail Is

An Inventor Fails 999 Times, And If He Succeeds Once, He's In. He Treats His Failures Simply As Practice Shots.

An Inventor Is Simply A Fellow Who Doesn't Take His Education Too Seriously.

The Only Time You Mustn't Fail Is The Last Time You Try.

The Difference Between Intelligence And An Education Is This: That Intelligence Will Make A Good Living For You, But Education Won't Do Much For You At All.

This Problem, Too, Will Look Simple After It Is Solved.