7. Ideas of Existence and Unity.
EXISTENCE and UNITY are two other ideas that are suggested to the understanding by every object without, and every idea within. When ideas are in our minds, we consider them as being actually there,as well as we consider things to be actually without us;—which is, that they exist, or have existence. And whatever we can consider as one thing, whether a real being or idea, suggests to the understanding the idea of unity.
8. Idea of Power.
POWER also is another of those simple ideas which we receive from sensation and reflection. For,observing in ourselves that we do and can think, and that we can at pleasure move several parts of our bodies which were at rest; the effects, also, that natural bodies are able to produce in one another, occurring every moment to our senses,—we both these ways get the idea of power.