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2 ideas
| 20783 | Knowledge is a secure grasp of presentations which cannot be reversed by argument [Stoic school, by Diog. Laertius] |
| Full Idea: Knowledge itself, say the stoics, is either a secure grasp or a disposition in the reception of presentations not reversible by argument. | |
| From: report of Stoic school (fragments/reports [c.200 BCE]) by Diogenes Laertius - Lives of Eminent Philosophers 07.47 | |
| A reaction: Helpful, but not enough. Fools hold secure grasps which cannot be refuted, as far as they are concerned. Consensus needed. Falsification? The truth-bearer is a 'presentation' (an appearance), which is different from modern accounts. |
| 20868 | Two sorts of opinion: either poorly grounded belief, or weak belief [Stoic school, by Stobaeus] |
| Full Idea: There are two kinds of opinion: one is assent to something which is not graspable; the other is weak belief. | |
| From: report of Stoic school (fragments/reports [c.200 BCE]) by John Stobaeus - Anthology 2.11m | |
| A reaction: Strong belief usually qualifies as knowledge. The Greek 'opinion' and 'belief' don't exactly map onto the modern words. This idea covers both the subjective aspect of belief (its strength) and its objective aspect (its grounding). |