“My dear Roosevelt You have established a record as the best herder of Emperors since Napoleon. I should long ago have written you my gratitude had not men - and women - taught me to hold my tongue before my betters. On public affairs I am still a scholar, not a professor; and when I think I know enough to help you, I will do it ... You have taught us how to herd Emperors, but also you have shown that, of all cattle, Emperors are most easily herded.”

Source: Wikiquote