Note 9 — Front matter (continued 3)

When we speak of things definite in themselves, we of course mean things made definite by some human act of definition. The senses are instruments that define and differentiate sensation; and the result of one operation is that definite object upon which the next operation is performed. The memory, for example, classifies in time what the senses may have classified in space. We are nowhere concerned with objects other than objects of human experience, and the epithets, definite and indefinite, refer necessarily to their relation to our various categories of perception and comprehension.