It has been said that no great work in literature or in science was ever wrought by a man who did not love solitude. We may lay it down as an elemental principle of religion, that no large growth in holiness was ever gained by one who did not take time to be often long alone with God.
The Still Hour or Communion with God, 1974, p. 64, by permission Banner of Truth, Carlisle, PA..
What is the reason that some believers are so much brighter and holier than others? I believe the difference, in nineteen cases out of twenty, arises from different habits about private prayer. I believe that those who are not eminently holy pray little, and those who are eminently holy pray much.