
It is in the nature of water to descend; but apply an instrument unto it that shall make a compression of it and force it unto a vent, it will fly upwards vehemently, as if that were its natural motion. But so soon as the force of the impression ceaseth, it returns immediately unto its own proper tendency, descending towards its center.
So is it with men’s thoughts ofttimes. They are earthly, — their natural course and motion is downwards unto the earth and the things thereof; but when any efficacious conviction presseth on the mind, it forceth the egress of its thoughts upwards towards heavenly things. It will think much and frequently of them, as if that were their proper motion and course; but so soon as the power of conviction decays or wears off, that the mind is no more sensible of its force and impression, the thoughts of it return again unto their old course and track, as the water tends downwards.
John Owen. GRACE AND DUTY OF BEING SPIRITUALLY MINDED.