19 ideas
| 7548 | Classes, grouped by a convenient property, are logical constructions [Russell] |
| 7545 | Visible things are physical and external, but only exist when viewed [Russell] |
| 12756 | Substance is a force for acting and being acted upon [Leibniz] |
| 7553 | Sense-data are purely physical [Russell] |
| 7549 | If my body literally lost its mind, the object seen when I see a flash would still exist [Russell] |
| 12755 | Final causes can help with explanations in physics [Leibniz] |
| 7546 | A man is a succession of momentary men, bound by continuity and causation [Russell] |
| 12760 | Something rather like souls (though not intelligent) could be found everywhere [Leibniz] |
| 7550 | We could probably, in principle, infer minds from brains, and brains from minds [Russell] |
| 13304 | Learned men gain more in one day than others do in a lifetime [Posidonius] |
| 12759 | There are atoms of substance, but no atoms of bulk or extension [Leibniz] |
| 12718 | Secondary matter is active and complete; primary matter is passive and incomplete [Leibniz] |
| 11854 | If there is some trace of God in things, that would explain their natural force [Leibniz] |
| 12758 | It is plausible to think substances contain the same immanent force seen in our free will [Leibniz] |
| 7547 | Matter requires a division into time-corpuscles as well as space-corpuscles [Russell] |
| 7551 | Matter is a logical construction [Russell] |
| 7552 | Six dimensions are needed for a particular, three within its own space, and three to locate that space [Russell] |
| 20820 | Time is an interval of motion, or the measure of speed [Posidonius, by Stobaeus] |
| 19408 | To say that nature or the one universal substance is God is a pernicious doctrine [Leibniz] |