Christ choosing solitude for private prayer, doth not only hint to us the danger of distraction and deviation of thoughts in prayer, but how necessary it is for us to choose the most convenient places we can for private prayer. Our own fickleness and Satan's restlessness call upon us to get into such places where we may freely pour out our soul into the bosom of God [Mark 1.35].

The privie key of heaven; or Twenty arguments for closet-prayer, in a select discourse (ed. 1820)