Excerpt

Have pity on those who are fearful of taking up a pen, or a paintbrush, or an instrument, or a tool because they are afraid that someone has already done so better than they could, and who feel themselves to be unworthy to enter the marvelous mansion of art. But have even more pity on those who, having taken up the pen, or the paintbruash, or the instrument, or the tool, have turned inspiration into a paltry thing, and yet feel themselves to be better than others. Neither of these kinds of people  know thy law that says, 'For there is nothing covered that will not be revealved, nor hidden that will not be known.'

Paulo Coelho in The Pilgrimage.