For my part, I love to stand foot to foot with an honest foeman. To open warfare, bold and true hearts raise no objection but the ground of quarrel; it is covert enmity which we have most cause to fear, and best reason to loathe. That crafty kindness which inveigles me to sacrifice principle is the serpent in the grass - deadly to the incautious wayfarer.
Charles SpurgeonGet a friend to tell you your faults, or better still, welcome an enemy who will watch you keenly and sting you savagely. What a blessing such an irritating critic will be to a wise man, what an intolerable nuisance to a fool!
Charles Spurgeon