Lord Haldane is the oldest personal and political friend that I have in the world. For the best part of 35 years we have been associated in close and unbroken intimacy. We have worked together, and fought side by side, through many vicissitudes of fortune, in the pursuit of what we have believed to be great and worthy causes, without (so far as I can recall) more than a passing shadow of difference in opinion, and always with the same ideals in view [...]" (from the letter of July 5, 1915; to Mr. Lincolnshire)..