A man should never be ashamed to own that he has been in the wrong, which is but saying in other words that he is wiser today than he was yesterday. - Alexander Pope

Vice is a monster of so frightful mien,
As, to be hated, needs but to be seen;
Yet seen too oft, familiar with her face,
We first endure, then pity, then embrace.

But where's the man, who counsel can bestow,
Still pleas'd to teach, and yet not proud to know?
Unbias'd, or by favour or by spite;
Not dully prepossess'd, nor blindly right;
Though learn'd, well-bred; and though well-bred, sincere;
Modestly bold, and humanly severe?
Who to a friend his faults can freely show,
And gladly praise the merit of a foe?
Blest with a taste exact, yet unconfin'd;
A knowledge both of books and human kind;
Gen'rous converse; a soul exempt from pride;
And love to praise, with reason on his side?

Pride, where wit fails, steps in to our defence,
And fills up all the mighty void of sense!
If once right reason drives that cloud away,
Truth breaks upon us with resistless day;
Trust not yourself; but your defects to know,
Make use of ev'ry friend — and ev'ry foe.