Ordinarily this knowledge is particular, and has relation to our own persons, and our own affairs; but it always comes to us with the freshness of a new communication, because it is always modified by the circumstances of the existing moment. The bright or clouded sky of to-day is not the sky of yesterday. The man of to-day is not the same man, nor surrounded by the same influences, nor the subject of the same providences, as the man of yesterday. There are forms or modifications of knowledge, appropriate to the conditions of youth and age, of poverty and riches, of subjection and government, and of other conditions, which are modified by the changes of each passing hour. The knowledge, therefore, which is appropriate and necessary now, could not have been equally appropriate and necessary in any antecedent period. It comes, therefore, with the attribute of novelty; and as it is necessary in order to the fulfillment of duty, it is always acceptable and refreshing to the consecrated and pious soul.
— A Treatise on Divine Union (1851) Part 3, Chapter 4.