Index for Chapter I - Of Ideas in general, and their Original

1. Idea is the object of thinking.

2. All ideas come from sensation or reflection.

3. The objects of sensation one source of ideas.

4. The operations of our minds, the other source of them.

5. All our ideas are of the one or the other of these.

6. Observable in children.

7. Men are differently furnished with these, according to the different objects they converse with.

8. Ideas of reflection later, because they need attention.

9. The soul begins to have ideas when it begins to perceive.

10. The soul thinks not always;

11. It is not always conscious of it.

12. If a sleeping man thinks without knowing it, the sleeping and waking man are two persons.

13. Impossible to convince those that sleep without dreaming, that they think.

14. That men dream without remembering it, in vain urged.

15. Upon this hypothesis, the thoughts of a sleeping man ought to be most rational.

16. On this hypothesis, the soul must have ideas not derived from sensation or reflection, of which there is no appearance.

17. If I think when I know it not, nobody else can know it.

18. How knows any one that the soul always thinks?

19. "That a man should be busy in thinking, and yet not retain it the next moment," very improbable.

20. No ideas but from sensation and reflection, evident, if we observe children.

21. State of a child in the mother's womb.

22. The mind thinks in proportion to the matter it gets from experience to think about.

23. A man begins to have ideas when he first has sensation.

24. The original of all our knowledge.

25. In the reception of simple ideas, the understanding is for the most part passive.