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| 13307 | If everything can be measured, try measuring the size of a man's soul [Seneca] |
| Full Idea: Nothing's outside your scope when it comes to measurement. Well, if you're such an expert, measure a man's soul; tell me how large or how small that is. | |
| From: Seneca the Younger (Letters from a Stoic [c.60], 088) | |
| A reaction: This is Descartes's non-spatial argument, which I take to be one of the four main props to his mind-body dualism. As always, it is expressed with beautiful concision by Seneca. |