66

56

to be true. We shall naturally express this by
[diagram]
Here we have a new kind of ligature, which
will follow all the rules of ligatures. We
have here a most important addition to the
system of graphs. There will be some
peculiar and interesting little rules, owing
to the fact that what one knows one has
the means of knowing that one knows,
— which is sometimes incorrectly stated in the form
that whatever one knows, one knows that
one knows, which is manifestly false.
For if it were the same to say “A whale is
not a fish" and “I know that a whale is