“What can be done when you’re eleven can often never be done again.”
“What will we be doing, when everything that can be done, can be done better by robots?”
“What is done can never be undone.”
“One never notices what has been done; one can only see what remains to be done.”
“What is done cannot be undone, but one can prevent it happening again.”
“If you can speak what you will never hear, if you can write what you will never read, you have done rare things.”