Art is purposiveness without purpose.
If justice perishes, human life on Earth has lost its meaning.
So act that anything you do may become universal law.
Experience without theory is blind, but theory without experience is mere intellectual play.
Through laziness and cowardice a large part of mankind, even after nature has freed them from alien guidance, gladly remain immature. It is because of laziness and cowardice that it is so easy for others to usurp the role of guardians. It is so comfortable to be a minor!
The only thing permanent is change.