This is the mystery, brothers, this is the great sacrament of the Lord’s cross, for in it we have those four virtues. Let surpassing charity be at the head; let obedience be on the right side – it makes children of the right hand; let patience be on the left side – which we must show to those who oppose us; let humility be at the foot – it is the root and foundation of all virtue. … Truly, Lord, as you were wounded by nails in the body, so you were wounded by the tongues in the heart; you accepted both for me, and for me your overlooked both.
Bernard of Clairvaux, Sermons for Lent and the Easter Season, On the Resurrection of the Lord – Sermon One, Alternate Version, v. 3 (CF 52, p. 151-152)