"There is but one thing needful — to possess God. All our senses, all our powers of mind and soul, all our external resources, are so many ways of approaching the divinity, so many modes of tasting and of adoring God. We must learn to detach ourselves from all that is capable of being lost, to bind ourselves absolutely only to what is absolute and eternal, and to enjoy the rest as a loan, as a usufruct…. To worship, to comprehend, to receive, to feel, to give, to act: this our law, our duty, our happiness, our heaven."