_How did she know it was a Saint? Lois could not tell how she knew; but from the very first moment that she found herself looking up into one of the kindest, most loving faces that she had ever seen, she was perfectly sure that she had found a Saint at last. She saw no halo--at least no golden halo; but the white hair that tenderly framed the white face looked almost like a halo of silver, the little girl thought. It was not a beautiful face; at any rate not what Lois would have called beautiful beforehand. It had many wrinkles though the skin was fresh and clear. The eyes looked, somehow, as if they had shed so many tears long ago, that now there were no tears left to shed; nothing remained but smiles. Perhaps that was the reason they were nearly always smiling. As Lois looked up and saw that gentle old face bending over her, it gave her the same sort of mysterious feeling that she had when she gazed up into the cloudless blue sky at noonday, or into a night sky full of stars. She seemed to be looking up, as high as ever she could, into something infinitely far above her; and yet to be looking down into something as well, deep down into an endless depth. Or rather, she felt that she was neither looking up nor down, but that she was looking_ through.... _'Why, Saints are a sort of window after all,' Lois said to herself, as she gave a jump of joy,--'real windows! Only not the glass kind! I have found out at last what makes a Saint, and what real live Saints look like. It is not being killed only; though I suppose they must always be ready to be killed. It is not being made of all the difficult things inside only; though, of course, they must always be full of them. It certainly isn't wearing ugly clothes or anything horrid. I know now what really and truly, and most especially, makes a Saint, and that is_ LETTING THE SUNLIGHT THROUGH!' _So Lois had found out something for herself at last, had she not? Those are always the best sort of discoveries; but there are a great many more things to find out about Saints that Lois never thought of, in those days long ago. Most interesting things they are! That is one comfort about Saints--they are always interesting, never dull. Dull is the one thing that real Saints can never be, or they would stop being Saints that very minute. Even when Saints are doing the dullest, dreariest, most difficult tasks, they themselves are always packed full of sunshine inside that cannot help streaming out over the dull part and making it interesting._ _This is one thing to remember about Saints; but there are many other things to discover. See if you can find out some of them in the stories that follow._