The Republic · Rep. 407b–407c

Yes, indeed, I replied, and equally incompatible with the management of a house, an army, or an office of state; and, what is most important of all, irreconcileable with any kind of study or thought or self-reflection—there is a constant suspicion that headache and giddiness are to be ascribed to philosophy, and hence all practising or making trial of virtue in the higher sense is absolutely stopped; for a man is always fancying that he is being made ill, and is in constant anxiety about the state of his body.

Plato · translated by Benjamin Jowett · composite transcription based on the 1888 third edition
Benjamin Jowett, revised third edition (1888), with Stephanus numbering from the 1908 edition; composite transcription, Project Gutenberg #55201
Passage preview. Read in context for the complete text, notes and references.