There is nothing permanent in the world except change.
All things are in a state of flux.
The only thing constant is change
The content of your character is your choice. Day by day, what you choose, what you think and what you do is who you become.
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.
There is harmony in the tension of opposites, as in the case of the bow and lyre.