"If there is one characteristic and striking trait in the innumerable conversations noted down by those who could approach him most intimately, it is the absence of all unforced utterances. He is always seen concerned, either to gauge the intentions of the other person, or to make an impression on his mind so as to lead him towards a certain conclusion; it would be trouble wasted to look for a moment of abandon, of enthusiasm, of sincere outpouring, be it about himself or others. Even when he allows himself to be carried away in these coquetries of cat-like grace, the charm of which contemporaries have so repeatedly described, he does not lose sight of the effect that he is aiming at; even his rash words are calculated. He is impenetrable to those near to him as well as to strangers. It would even be impossible to point out, in the whole of his life, a single one of those sayings of philosophic self-mockery which delight us in Caesar or in Frederick, because they show us the man rising above his role, commenting on himself with a judgment unclouded by his own success... Napoleon is always on the stage, always concerned about the impression he is making... He is lacking in that final human greatness which consists in estimating one's self at its true value, and as a result of his incurable self-conceit he remains on the level of small minds."
January 1, 1970
https://en.wikiquote.org/wiki/Napoleon