We look out on the world with our eyes, but see the world with our heart. Our eyes look on an object, determine its value and hue, and bring the object into focus. The object our eyes look on, our heart sees with emotion, feeling, or desire.
A heart focused on self sees all in terms of self desires and needs. A heart focused on God sees and experiences the glory and wonder of God for God holds all in existence and is hidden in all. We need to keep our heart focused on God to see Him in all we look on.