Do well, but do not boast of it; for that will lessen the commendation you might otherwise have deserved. - James Burgh

Nothing is more unmannerly than to reflect on any man's profession, sect, or natural infirmity. He who stirs up against himself another's self-love, provokes the strongest passion in human nature.

If you have a friend that will reprove your faults and foibles, consider you enjoy a blessing which the king upon the throne cannot have.

You need not tell all the truth, unless to those who have a right to know it all. But let all you tell be truth.