Honest differences are often a healthy sign of progress.
It behooves every man to remember that the work of the critic is of altogether secondary importance, and that in the end, progress is accomplished by the man who does things.
A static hero is a public liability. Progress grows out of motion.
Without deviation from the norm, progress is not possible.
He who rejects change is the architect of decay. The only human institution which rejects progress is the cemetery.
Let mental culture go on advancing, let the natural sciences progress in even greater extent and depth, and the human mind widen itself as much as it desires: beyond the elevation and moral culture of Christianity, as it shines forth in the Gospels, it will not go.
Poetry and progress are like two ambitious men who hate one another with an instinctive hatred, and when they meet upon the same road, one of them has to give place.
Pain produces progress. So if you truly love me, you will try to hurt me as much as you can. If you really want me to grow as a person, you will water me with betrayal, abuse, neglect, derision, thievery, and possibly even torture.
Change is scientific, progress is ethical; change is indubitable, whereas progress is a matter of controversy.