“Thus the wise man, at all times and on every road, carries a mind ripe for acquisitions that ordinary folk neglect. The humblest occupation is for him a continuation of the loftiest; his formal calls are fortunate chances of investigation; his walks are voyages of discovery, what he hears and his silent answers are a dialogue that truth carries on with herself within him. Wherever he is, his inner universe is comparing itself with the other, his life with Life, his work with the incessant work of all beings; and as he comes forth from the narrow space in which his concentrated study is done, one gets the impression, not that he is leaving the true behind, but that he is throwing his door wide open so that the world may bring to him all the truth given out in its mighty activities.”
— A. G. Sertillanges in The Intellectual Life (1921) translated from French by Mary Ryan