I cannot rest from travel: I will drink Life to the lees: all times I have enjoyed Greatly, have suffered greatly, both with those That loved me, and alone; on shore, and when Through scudding drifts the rainy Hyades Vext the dim sea: I am become a name; For always roaming with a hungry heart Much have I seen and known; cities of men And manners, climates, council, governments, Myself not least, but honoured of them all; And drunk delight of battle with my peers, Far on the ringing plains of windyTroy. I am part of all that I have met; Yet all experience is an arch wherethrough Gleams that untravelled world, whose margin fades For ever and for ever when I move. How dull it is to pause, to make an end, To rust unburnished, not to shine in use! As though to breathe were life.

-Tennyson
  Poems,'Ulysses' (published1842), l.6^24.