The difference between Lillie in good humor and Lillie in bad humor was a thing which John soon learned to appreciate as one of the most powerful forces in his life.

If you knew, my dear reader, that by pursuing a certain course you could bring upon yourself a drizzling, dreary, north-east rain-storm, and by taking heed to your ways you could secure sunshine, flowers, and bird-singing, you would be very careful, after a while, to keep about you the right atmospheric temperature; and, if going to see the very best friend you had on earth was sure to bring on a fit of rheumatism or tooth-ache, you would soon learn to be very sparing of your visits.
For this reason it was that Grace saw very little of John; that she never now had a sisterly conversation with him; that she preferred arranging all those little business matters, in which it would be convenient to have a masculine appeal, solely and singly by herself.
The thing was never referred to in any conversation between them.

It was perfectly understood without words.

There are friends between whom and us has shut the coffin-lid; and there are others between whom and us stand sacred duties, considerations never to be enough reverenced, which forbid us to seek their society, or to ask to lean on them either in joy or sorrow: the whole thing as regards them must be postponed until the future life.

Such had been Grace's conclusion with regard to her brother.