22 And whoever will inquire, will find other reasons also; but what has been said is enough, because of the shortness of the time, and that the attention of my hearers may not become sated. And yet we never can be tired of hearing concerning the crowning of our Lord, and least of all in this most holy Golgotha. For others only hear, but we both see and handle. Let none be weary; take your armour against the adversaries in the cause of the Cross itself; set up the faith of the Cross as a trophy against the gainsayers. For when you are going to dispute with unbelievers concerning the Cross of Christ, first make with your hand the sign of Christ's Cross, and the gainsayer will be silenced. Be not ashamed to confess the Cross; for Angels glory in it, saying, We know whom you seek, Jesus the Crucified. Might you not say, O Angel, “I know whom you seek, my Master?” But, “I,” he says with boldness, “I know the Crucified.” For the Cross is a Crown, not a dishonour.
Source: Catechetical Lectures (New Advent)