72

102

subject to variations, and these variations, it has not been
sufficiently remarked in connection with this difference of opinion, is quite
indispensible to their regular action.
I can hardly understand how there could be such
a thing as an unchangeable habit. The great
psychologist, Hume, said that the law of the
association of ideas was a “gentle force.” It
seems to me to be essentially so.

I dwell upon this rule of division, because,
however it may be in other fields, in logic I
am pretty sure that it invariably holds the divisions [it leads to are ??]
the most important. At any rate, though I have never relied upon it,
not seeing any clear reason why it should be
so, and feeling sure that nothing
in logic can be universally true without a
reason, yet I have invariably found its

102

subject to variations, and these variations, it has not been
sufficiently remarked in connection with this difference of opinion, is quite
indispensible to their regular action.
I can hardly understand how there could be such
a thing as an unchangeable habit. The great
psychologist, Hume, said that the law of the
association of ideas was a “gentle force.” It
seems to me to be essentially so.

I dwell upon this rule of division, because,
however it may be in other fields, in logic I
am pretty sure that it invariably holds the divisions [it leads to are ??]
the most important. At any rate, though I have never relied upon it,
not seeing any clear reason why it should be
so, and feeling sure that nothing
in logic can be universally true without a
reason, yet I have invariably found its