I thought of Chatterton, the marvellous boy, The sleepless soul that perished in his pride. Of him who walked in glory and in joy Following his plough along the mountainside: By our own spirits are we deified. We poets in our youth begin in gladness; But thereof comes in the end despondencyand madness.

-Wordsworth,William
  Of the poetThomas Chatterton, who committed suicide at the age of17.'Resolution and Independence', stanza 7 (published1807).