“The worst sin is prayerlessness. Overt sin, or crime, or the glaring inconsistencies which often surprise us in Christian people are the effect of this or its punishment. We are left by God for lack of seeking Him. The history of the saints shows often that their lapses were the fruit and nemesis of slackness or neglect in prayer. Their life, at seasons, also tended to become inhuman by their spiritual solitude. . . . Only living prayer keeps loneliness humane.”
~ P.T. Forsyth, The Soul of Prayer, 9.