No rules, however wise, are a substitute for affection and tact.
There is only one good substitute for the endearments of a sister, and that is the endearments of some other fellow's sister.
A woman occasionally is quite a serviceable substitute for masturbation.
Vulgarity is no substitute for wit
I feel there is no substitute for going out to the movies. There is nothing like it.
Cribbage, n. A substitute for conversation among those to whom nature has denied ideas.
I did end up doing substitute teaching, but there's not a lot of teaching involved in that.
The government can supply no substitute for enterprise.
There is no substitute for a militant freedom.
You can't substitute material things for love or for gentleness or for tenderness or for a sense of comradeship