12 ideas
| 12036 | Xenophanes began the concern with knowledge [Annas] |
| 12046 | Plato was the first philosopher who was concerned to systematize his ideas [Annas] |
| 12312 | The real essence of a thing is its powers, or 'dispositional properties' [Copi] |
| 10937 | Essential properties are the 'deepest' ones which explain the others [Copi, by Rami] |
| 12308 | In modern science, nominal essence is intended to be real essence [Copi] |
| 12303 | Within the four types of change, essential attributes are those whose loss means destruction [Copi] |
| 12037 | Euripides's Medea is a key case of reason versus the passions [Annas] |
| 12040 | Virtue is a kind of understanding of moral value [Annas] |
| 13304 | Learned men gain more in one day than others do in a lifetime [Posidonius] |
| 12307 | Modern science seeks essences, and is getting closer to them [Copi] |
| 12310 | Real essences are scientifically knowable, but so are non-essential properties [Copi] |
| 20820 | Time is an interval of motion, or the measure of speed [Posidonius, by Stobaeus] |