There must be the silence of the mind as well as of the heart and will. We must not have our thoughts ever occupied with other things, but must cultivate the habit of detaching them from earth and keeping our minds still before God, that He may pour His light into them. Surely, if ever any generation needed the preaching, “be still and let God speak,” we need it. Even religious men are so busy with spreading or defending Christianity that they have little time and, many of them, less inclination, for quiet meditation and still communion with God. Newspapers, and books, and practical philosophy, and Christian effort, and business, and amusement, so crowd into our lives now, that it needs some resolution and some planning to get a clear space where we can be quiet, and look at God.
From: Expositions of Holy Scripture, comment on Psalm 62:1, 5.