To do the same thing over and over again is not only boredom: it is to be controlled by rather than to control what you do.
Everything is in flux.
It is weariness to keep toiling at the same things so that one becomes ruled by them.
Eyes are more accurate witnesses than ears.
Man is on earth as in an egg.
No same man could walk through the same river twice, as the man and the river have since changed.