I call the exercise of this factor in our knowledge 'recognition,' and the requisite sense-awareness of the comparable characters I call 'sense-recognition.' Recognition and abstraction essentially involve each other.

Each of them exhibits an entity for knowledge which is less than the concrete fact, but is a real factor in that fact.

The most concrete fact capable of separate discrimination is the event.

We cannot abstract without recognition, and we cannot recognise without abstraction.

Perception involves apprehension of the event and recognition of the factors of its character.
The things recognised are what I call 'objects.' In this general sense of the term the relation of extension is itself an object.