Exclamation marks have the same difficulty and also quotation marks,
they are unnecessary, they are ugly, they spoil the line of the writing
or the printing and anyway what is the use, if you do not know that a
question is a question what is the use of its being a question. The same
thing is true of a quotation. When I first began writing I found it simply
impossible to use question marks and quotation marks and exclamation
points and now anybody sees it that way. Perhaps some day they will see
it some other way but not at any rate anybody can and does see it that way.