1. [261]All significant words stand for ideas[262].
2. All knowledge about our ideas.
3. All ideas come from without or from within.
4. If from without it must be by the senses, & they are call'd sensations[263].
5. If from within they are the operations of the mind, & are called thoughts.
6. No sensation can be in a senseless thing.
7. No thought can be in a thoughtless thing.
8. All our ideas are either sensations or thoughts[264], by 3, 4, 5.
9. None of our ideas can be in a thing wch is both thoughtless & senseless[265], by 6, 7, 8.