David Hume writes in A Treatise of Human Nature:

There are instances, indeed, wherein men shew a vanity in resembling a great man in his countenance, shape, air, or other minute circumstances, that contribute not in any degree to his reputation; but it must be confess’d, that this extends not very far, nor is of any considerable moment in these affections. For this I assign the following reason. We can never have a vanity of resembling in trifles any person, unless he be possess’d of very shining qualities, which give us a respect and veneration for him. These qualities, then, are, properly speaking, the causes of our vanity, by means of their relation to ourselves. Now after what manner are they related to ourselves? They are parts of the person we value, and consequently connected with these trifles; which are also suppos’d to be parts of him. These trifles are connected with the resembling qualities in us; and these qualities in us, being parts, are connected with the whole; and by that means form a chain of several links betwixt ourselves and the shining qualities of the person we resemble. But besides that this multitude of relations must weaken the connexion; ’tis evident the mind, in passing from the shining qualities to the trivial ones, must by that contrast the better perceive the minuteness of the latter, and be in some measure asham’d of the comparison and resemblance.