You can ask for the earth, the sun and the moon
And even if you fail, you still end up with the stars
Spoken by someone in a very pressured occupation that he lives for.
Addendum, August 1, 2017:
And who, as it turns out, is concerned about accuracy of attribution. From a follow-up email:
Turns out I misquoted the author… Or made it my own, whichever you’d rather.
Shoot for the moon. Even if you miss, you’ll land among the stars.