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

T-12.VII.3. The Holy Spirit is invisible, but you can see the results of His Presence, and through them you will learn that He is there. 2 What He enables you to do is clearly not of this world, for miracles violate every law of reality as this world judges it. 3 Every law of time and space, of magnitude and mass is transcended, for what the Holy Spirit enables you to do is clearly beyond all of them. 4 Perceiving His results, you will understand where He must be, and finally know what He is.