Become.

Quality is never an accident; it is always the result of intelligent effort. Great nations write their autobiographies in three manuscripts – the book of their deeds, the book of their words and the book of their art.  What we think, or what we know, or what we believe, is, in the end, of little consequence. The only consequence is what we do.  The highest reward for a person's toil is not what they get for it, but what they become by it. 

John Ruskin