We should, every one of us, bear in mind that if not kept each moment by the grace of God, we are capable of anything. We have materials in us for any amount or character of evil; and whenever we hear anyone saying, "I would never do that," we may feel assured he does not know his own heart. And not only so, but he is in imminent danger of falling into some grievous sin. It is well to walk humbly before our God, distrusting self, and leaning on Him. This is the true secret of moral safety at all times.