Lyndon Johnson actually said...

"I hope and I pray that by not allowing the Presidency to be involved in divisions and deep partisanship, I shall be able to pass on to my successor a stronger office--strong enough to guard and defend..."

"It looks to me like you are going to the wrong convention in Chicago."

"Well, what you overlooked was that it is April Fool."

"Things are really getting confused around Washington, Mr. President."