Monopoly controls have been the exception in free societies; they have been the rule in closed societies.

Copyrights have not expired, and will not expire, so long as Congress is free to be bought to extend them again.

I never make exceptions. An exception disproves the rule.

The exception which proves the rule

There is no exception to the rule that every rule has an exception

Americans have been selling this view around the world: that progress comes from perfect protection of intellectual property.