A man who climbs a steep mountain is always apt to slip. But if this slipping, which is natural, induces him to go down again he will never climb any more. If he slips and then tries to go on he will become more sure-footed, and will learn how to avoid slipping. Perhaps he will slip a thousand times, but a thousand times he will go forward again. It is nothing to be surprised at if a person slips; it is natural. The mountain is steep; it is natural that one should slip. The best thing one can do is to go on after every such slip, without losing courage, without allowing one's consciousness to be impressed by it; to think that it is natural and to continue the ascent.