Experience proves that there is a power in holy places, power to quicken the spiritual life and vitalize the soul with fresh enthusiasm and inspiration. While strong spiritual emotions have been felt for long periods of time by successive generations of dedicated men and women -- especially if they have had among them those who may be reckoned as saints because of their genius for devotion -- the mental atmosphere of the place becomes imbued with spiritual forces, and sensitive souls capable of response are deeply stirred thereby when they come into it.
Why has this Frenchman from France written his book in the United States to present to his friends today? Because loving the country and wanting to show his gratitude, he could find no better way of expressing it than in these two truths, intimately known to him [Jacques is blind] and reaching beyond all boundaries.
The first of these is that joy does not come from outside, for whatever happens to us it is within. The second truth is that light does not come to us from without; Light is in us, even if we have no eyes.