“I want no greater proof of the corruption of human nature than the pertinacity with which we seek happiness where happiness cannot be found.”

“If, in the face of these facts, somebody still insists that the boundaries of the Sikh religion are blurred, it is sheer pertinacity.”

“This was returned to Buckingham Palace in 1947, largely through the pertinacity of Queen Mary.”

“I had too much experience of my father's pertinaciousness ever to hope for a change in his views.”

“Gives samples of the pertinaciousness of fathers voices.”