Related:

• The Well. The town may be changed, But the well cannot be changed.
  It neither decreases nor increases. They come and go and draw from the well....
• The gods can either take away evil from the world and will not, or, being willing to do so canno
  or they neither can nor will, or lastly, they are both able and willing....
• No one can persuade another to change. Each of us guards a gate of change that can only be opened from the inside.
  We cannot open the gate of another, neither by argument nor by emotional appeal....
• You can catch the bird, but you cannot carry it.
• Perhaps we are wiser, less selfish and more far-seeing than we were two hundred years ago.
  But we are still imperfectly all these good things, and since the turn of the century it has been remarked that neither wisdom nor virtue have increased as rapidly as the need for both....
• Matter cannot be created or destroyed, nor can it be returned without a receipt.