Acorns were good until bread was found.
As long as I can conceive something better than myself I cannot be easy unless I am striving to bring it into existence or clearing the way for it.
If you improve or tinker with something long enough, eventually it will break or malfunction.
Judge of thine improvement, not by what thou speakest or writest, but by the firmness of thy mind, and the government of thy passions and affections.
Much of the wisdom of one age, is the folly of the next.
The best performance improvement is the transition from the nonworking state to the working state.
Things will get better — despite our efforts to improve them.
Undoubtedly a man is to labor to better his condition, but first to better himself.
Where we cannot invent, we may at least improve.