Mark Twain said this quote

“ The boys were amazed that I could make such a poem as that out of my own head, and so was I, of course, it being as much a surprise to me as it could be to anybody, for I did not know that it was in me. If any had asked me a single day before if it was in me, I should have told them frankly no, it was not.That is the way with us; we may go on half of our life not knowing such a thing is in us, when in reality it was there all the time, and all we needed was something to turn up that would call for it. ”