I wish I could say that what follows comes from my mind. It does not. It is from chapter 10 of F.A. Hayek's 1944 book, The Road to Serfdom. The title of the chapter is Why the Worst Get on Top.
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"There are three main reasons why such a numerous and strong group with fairly homogeneous views is not likely to be formed by the best but rather by the worst elements of any society. By our standards the principles on which such a group would be selected will be almost entirely negative.
In the first instance, it is probably true that in general the higher the education and intelligence of individuals becomes, the more their views and tastes are differentiated and the less likely they are to agree on a particular hierarchy of values. It is a corollary of this that if we wish to find a high degree of uniformity and similarity of outlook, we have to descend to the regions of lower moral and intellectual standards where the more primitive and "common" instincts and tastes prevail.
This does not mean that the majority of people have low moral standards; it merely means that the largest group of people whose values are very similar are the people with low standards. It is, as it were, the lowest common denominator which unites the largest number of people. If a numerous group is needed, strong enough to impose their views on the values of life on all the rest, it will never be those with highly differentiated and developed tastes it will be those who form the "mass" in the derogatory sense of the term, the least original and independent, who will be able to put the weight of their numbers behind their particular ideals.
If, however, a potential dictator had to rely entirely on those whose uncomplicated and primitive instincts happen to be very similar, their number would scarcely give sufficient weight to their endeavors. He will have to increase their numbers by converting more to the same simple creed.
Here comes in the second negative principle of selection: he will be able to obtain the support of all the docile and gullible, who have no strong convictions of their own but are prepared to accept a ready-made system of values if it is only drummed into their ears sufficiently loudly and frequently. It will be those whose vague and imperfectly formed ideas are easily swayed and whose passions and emotions are readily aroused who will thus swell the ranks of the totalitarian party."