SECOND TRUTH. By this life, Jesus Christ imparts to me His Spirit. In this way, He becomes the principle of a superior activity which raises me up, provided I do not obstruct it, to think, judge, love, will, suffer, labor with Him, by Him, in Him, and like Him. My outward acts become the manifestations of this life of Jesus in me. And thus I ten to realize the ideal of the INTERIOR LIFE that was formulated by St. Paul when he said: "I live, now not I, but Christ liveth in me."
Christian life, piety, interior life, sanctity: in all these we find no essential difference. They are only different degrees of one and the same love. They are the half-light, the dawning, the rising, and the zenith of the same sun.
Whenever the expression "interior life" is used in this book, the reference is not so much to habitual interior life, which we may call the "principal" or "capital" of the divine life deposited in us, by sanctifying grace, as to the actual interior life, which invests this capital and puts it to work in the activity of our soul, and in our fidelity to actual graces.
Thus I can define it as the state of activity of a soul which strives against its natural inclinations in order to REGULATE them, and endeavors to acquire the HABIT of judging and directing its movements IN ALL THINGS according to the light of the Gospel and the example of Our Lord.
Hence, a twofold movement. By the first, the soul withdraws from all that is opposed to the supernatural life in created things, and seeks at all times to be recollected: aversio a creaturis. By the second, the soul tends upwards to God, and unites itself with Him: conversio ad Deum.
The soul wishes in this way to be faithful to the grace which Our Lord offers to it at every moment. In a word, it lives, united to Jesus, and carries out in actuality the principle: "He that liveth in Me, and I in him, the same beareth much fruit."