Doris Kearns Goodwin said this quote

The very qualities that had led to Johnson's political and legislative success were precisely those that now operated to destroy him: his inward insistence that the world adapt itself to his goals; his faith in the nation's limitless capacity; his tendency to evaluate all human activity in terms of its political significance; his insistence on translating every disruptive situation into one where bargaining was possible; his reliance on personal touch; his ability to speak to each of his constituent groups on its own terms. All these gifts, instead of sustaining him, now conspired to destroy him.