How to suppress lecture message when sudo is executed for the first time

Issue

• How do I suppress lecture message when sudo is executed for the first time?

  $ sudo ls
  
  We trust you have received the usual lecture from the local System
  Administrator. It usually boils down to these three things:
  
    #1) Respect the privacy of others.
    #2) Think before you type.
    #3) With great power comes great responsibility.
  
  [sudo] password for testuser: