THUS roll I, never taking ease,
My tub, like Saint Diogenes,
Now serious am, now seek to please;
Now love and hate in turn one sees;
The motives now are those, now these;
Now nothings, now realities.
Thus roll I, never taking ease,
My tub, like Saint Diogenes.

Johann Wolfgang von Goethe

http://www.poemhunter.com/poem/genial-impulse/