display all the ideas for this combination of philosophers
2 ideas
| 1673 | Knowledge proceeds from principles, so it is hard to know if we know [Aristotle] |
| Full Idea: It is difficult to know whether you know something or not. For it is difficult to know whether or not our knowledge of something proceeds from its principles - and this is what it is to know something. | |
| From: Aristotle (Posterior Analytics [c.327 BCE], 76a25) |
| 2573 | To perceive or think is to be conscious of our existence [Aristotle] |
| Full Idea: To be conscious that we are perceiving or thinking is to be conscious of our existence (for we have seen that existence is sensation or thought). | |
| From: Aristotle (Nicomachean Ethics [c.334 BCE], 1170a32) | |
| A reaction: A lovely glimpse of Descartes' Cogito, which was made more explicit by Augustine. Is an animal (which presumably perceives) conscious of its existence? |