or do they express a thought?

+P+.--They express ideas merely associated.

+T+.--_Leaves fall_.

Same question.

+P+.--A thought.

+T+.--Why?

+P+.--Because, in these words, there is something _said_ or _asserted_ of
leaves.

+T+.--When I say, _Falling leaves rustle_, does _falling_ tell what is
thought of leaves?

+P+.--No.

+T+.--What does _falling_ do?

+P+.--It tells the _kind_ of leaves you are thinking and speaking of.

+T+.--What word _does_ tell what is thought of leaves?

+P+.--_Rustle_.

+T+.--You see then that in the thought there are two parts; something of
which we think, and that which we think about it.