Rerum Omnium Perturbationem §14

¹⁴ At the same time we learn from the Saint how not only to perform the customary acts of everyday life, (with the exception, of course, of sin) but also a fact which all do not know, how to do these things correctly with the sole intention of pleasing God. He teaches us to observe the social conventions which he calls one of the charming effects of virtuous living, not to destroy our natural inclinations but to conquer them so that little by little without too much effort, like the dove, if by chance there has not been granted us the strength of the eagle, we may raise ourselves even to heaven itself. What the Saint means by this metaphor is that if we are not called to an extraordinary personal perfection, nevertheless we can attain holiness by sanctifying the actions of everyday life.