Mind is the power for thought, or of thought; that in a thing enabling it to have, by pain and pleasure, other things in it.

a. An object is anything thought of, as having something done to it. b. An object is anything thought of as being thought of.

Pleasure is the feeling in a thing that another thing is for what it is; or at one with what it is.

Pain is the feeling in a thing that another thing is not for what it is; or not at one with what it is.