Penetrating thoughts from The Rare Jewel of Christian Contentment by Jeremiah Burroughs:

There is nothing in the creatures that is suitable for a gracious heart to feed upon for its good and happiness. My brethren, the reason why you have not got contentment in the things of the world Is not because you have not got enough of them – that is not the reason – but the reason is, because they are not things proportion of all the immortal soul of yours that is capable of God himself. Many men think that when they are troubled and have not got contentment is because they have but a little in the world, and that if they had more they should be content.

That is just as if a man or hungry, and to satisfy his craving stomach he should gate and hold open his mouth to take and the wind, and then should think that the reason why he is not satisfied is because he is not got enough of the wind; No, the reason is because the thing is not suitable to a craving stomach. Yet there is really the same madness in the world: the wind which a man takes and by gaping will as soon satisfy a craving stomach ready to start, as all the comforts in the world can satisfy a soul who knows what true happiness means.