Statesmen cannot find any way of securing international co-operation or preventing war. Philosophers have no guidance to offer mankind. The only people left with positive opinions are those who are too stupid to know when their opinions are absurd. Consequently the world is ruled by fools, and the intelligent count for nothing in the councils of the nations.
Source: "On modern uncertainty" [From: Mortals and Others: Bertrand Russell's American Essays, 1931-1935, v.1 (1975)]
More info.: https://russell-j.com/MODERN-U.HTM