It is part of the price of leadership of this great and free nation to be the target of clever satirists. You have given the gift of laughter to our people. May we never grow so somber or self-important that we fail to appreciate the humor in our lives.

Lyndon B. Johnson (1908-1973) American politician, educator, US President (1963-69)

Letter to the Smothers Brothers (1968-11-09)

Replying to a letter from them apologizing for making him the target of so much of their humor. More info here and here.