Yet so vain is man, and so blinded by his vanity,

Man is the vainest of all
creatures that have their being upon earth. As long as heaven
vouchsafes him health and strength, he thinks that he shall come to
no harm hereafter, and even when the blessed gods bring sorrow upon
him, he bears it as he needs must, and makes the best of it; for
God Almighty gives men their daily minds day by day. I know all
about it, for I was a rich man once, and did much wrong in the
stubbornness of my pride, and in the confidence that my father and
my brothers would support me; therefore let a man fear God in all
things always, and take the good that heaven may see fit to send
him without vainglory.

I've never met a murderer who wasn't vain... It's their vanity that leads to their undoing, nine times out of ten. They may be frightened of being caught, but they can't help strutting and boasting and usually they're sure they've been far too clever to be caught.

To vain men, other people are admirers.

Human vanity is so constituted that it stiffens before difficulties. The more an object conceals itself from our eyes, the greater the effort we make to seize it, because it pricks our pride, it excites our curiosity and it appears interesting. In fighting for his God everyone, in fact, fights only for the interest of his own vanity, which, of all the passions produced bye the mal-organization of society, is the quickest to take offense, and the most capable of committing the greatest follies.

All sensible people know that vanity is the most devastating, the most universal, and the most ineradicable of the passions that afflict the soul of man, and it is only vanity that makes him deny its power. It is more consuming than love. With advancing years, mercifully, you can snap your fingers at the terror and the servitude of love, but age cannot free you from the thraldom of vanity. Time can assuage the pangs of love, but only death can still the anguish of wounded vanity. Love is simple and seeks no subterfuge, but vanity cozens you with a hundred disguises. It is part and parcel of every virtue: it is mainspring of courage and the strength of ambition; it gives constancy to the lover and endurance to the stoic; it adds fuel to the fire of the artist's desire for fame and is at once the support and the compensation of the honest man's integrity; it leers even cynically in the humility of the saint. You cannot escape it, and should you take pains to guard against it, it will make use of those very pains to trip you up. You are defenseless against its onslaught because you know not on what unprotected side it will attack you. Sincerity cannot protect you from its snare nor humour from its mockery.
[His Excellency]

If I really seem vain, it is that I am only vain in my ways — not in my heart. The worst women are those vain in their hearts, and not in their ways.

He who despises himself, nevertheless esteems himself as a self-despiser. (Nietzsche.)
A vain person is always vain <i>about</i> something. He overestimates the importance of some quality or exaggerates the degree to which he possesses it, but the quality has some real importance and he does possess it to some degree. The fantasy of overestimation or exaggeration makes the vain person comic, but the fact that he cannot be vain about nothing makes his vanity a venial sin, because it is always open to correction by appeal to objective fact.

A proud person, on the other hand, is not proud <i>of </i>anything, he <i>is </i>proud, he exists proudly. Pride is neither comic nor venial, but the most mortal of all sins because, lacking any basis in concrete particulars, it is both incorrigible and absolute: one cannot be more or less proud, only proud or humble.

Thus, if a painter tries to portray the Seven Deadly Sins, his experience will furnish him readily enough with images symbolic of Gluttony, Lust, Sloth, Anger, Avarice, and Envy, for all these are qualities of a person’s relations to others and the world, but no experience can provide an image of Pride, for the relation it qualifies is the subjective relation of a person to himself. In the seventh frame, therefore, the painter can only place, in lieu of a canvas, a mirror.

If human nature were not base, but thoroughly honourable, we should in every debate have no other aim than the discovery of truth; we should not in the least care whether the truth proved to be in favour of the opinion which we had begun by expressing, or of the opinion of our adversary. That we should regard as a matter of no moment, or, at any rate, of very secondary consequence; but, as things are, it is the main concern. Our innate vanity, which is particularly sensitive in reference to our intellectual powers, will not suffer us to allow that our first position was wrong and our adversary’s right. The way out of this difficulty would be simply to take the trouble always to form a correct judgment. For this a man would have to think before he spoke. But, with most men, innate vanity is accompanied by loquacity and innate dishonesty. They speak before they think; and even though they may afterwards perceive that they are wrong, and that what they assert is false, they want it to seem thecontrary. The interest in truth, which may be presumed to have been their only motive when they stated the proposition alleged to be true, now gives way to the interests of vanity: and so, for the sake of vanity, what is true must seem false, and what is false must seem true.

Heaven help us! The girls have only to turn the tables,and say of one of their own sex,'She is as vain as a man,' and they will have perfect reason. The bearded creatures are quite as eager for praise, quite as finikin over their toilets, quite as proud of their personal advantages, quite as conscious of their powers of fascinations, as any coquette in the world.

It is difficult for a man to speak long of himself without vanity.

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.

I shall stick to our vow: never, never under any circumstances, to say anything unbecoming of the other...The trouble, of course, is that most successful men are prone to some form of vanity. There comes a stage in their lives when they consider it permissible to be egotistic and to brag to the public at large about their unique achievements.

Man is indeed an object miraculously vain, various and wavering. It is difficult to found a judgement on him which is steady and uniform.