Sertillanges speaking about “hard science” in The Intellectual Life — Its Spirit, Conditions, Methods: The sciences, without philosophy, discrown themselves and lose their direction. The sciences and philosophy without theology discrown themselves more lamentably, since the crown they repudiate is a heavenly one; and they go more irremediably astray, for earth without heaven cannot find the path of its orbit, nor the influences that give it fruitfulness. And a continuation of the previous quote: