And then, in the second place, that same thought of an activity which is its own impulse and its own law, suggests another aspect of this blessedness, namely, that it sets us free from the tyranny of external circumstances which absolutely shape the lives of so many of us. The lives of all must be to a large extent moulded by these, but they need not, and should not be completely determined by them. It is a miserable thing to see men and women driven before the wind like thistledown. Circumstances must influence us, but they may either influence us to base compliance and passive reception of their stamp, or to brave resistance and sturdy nonconformity to their solicitations. So used, they will influence us to a firmer possession of the good which is most opposite to them, and we shall be the more unlike our surroundings, the more they abound in evil. You can make your choice whether, if I may so say, you shall be like balloons that are at the mercy of the gale and can only shape their course according as it comes upon them and blows them along, or like steamers that have an inward power that enables them to keep their course from whatever point the wind blows, or like some sharply built sailing-ship that, with a strong hand at the helm, and canvas rightly set, can sail almost in the teeth of the wind and compel it to bear her along in all but the opposite direction to that in which it would carry her if she lay like a log on the water. I beseech you all, and especially you young people, not to let the world take and shape you, like a bit of soft clay put into a brick-mould, but to lay a masterful hand upon it, and compel it to help you, by God's grace, to be nobler, and truer, and purer. It is a shame for men to live the lives that so many amongst us live, as completely at the mercy of externals to determine the direction of their lives as the long weeds in a stream that yield to the flow of the current. It is of no use to preach high and brave maxims, telling men to assert their lordship over externals, unless we can tell them how to find the inward power that will enable them to do so. But we can preach such noble exhortations to some purpose when we can point to the great gift which Christ is ready to give, and exhort them to open their hearts to receive that indwelling power which shall make them free from the dominion of these tyrant circumstances and emancipate them into the 'liberty of the sons of God.' 'The water that I shall give him shall be in him a leaping fountain.' III. The last point here is that Christ's gift is a fountain 'springing up into everlasting life.'