Very great personages are not likely to form very just estimates either of others or of themselves; their knowledge of themselves is obscured by the flattery of others; their knowledge of others is equally clouded by circumstances peculiar to themselves. For in the presence of the great, the modest are sure to suffer from too much diffidence, and the confident from too much display.

Remarks on the Talents of Lord Byron and the Tendencies of Don Juan (ed. 1823)