Quote from A Course in Miracles Text Chapter 12 - THE HOLY SPIRIT'S CURRICULUM.

T-12.II.3. Perceive in sickness but another call for love, and offer your brother what he believes he cannot offer himself. 2 Whatever the sickness, there is but one remedy. 3 You will be made whole as you make whole, for to perceive in sickness the appeal for health is to recognize in hatred the call for love. 4 And to give a brother what he really wants is to offer it unto yourself, for your Father wills you to know your brother as yourself. 5 Answer his call for love, and yours is answered. 6 Healing is the Love of Christ for His Father and for Himself.