People get from books the idea that if you have married the
right person you may expect to go on "being in love" for ever.
As a result, when they find they are not, they think this proves
they have made a mistake and are entitled to a change -not
realizing that, when they have changed, the glamour will
presently go out of the new love just as it went out of the old
one. In this department of life, as in every other, thrills
come at the beginning and do not last... but if you go through
with it, the dying away of the first thrill will be compensated
for by a quieter and more lasting kind of interest.