Full Idea
How do you know that there is no idea of colour in a man born blind?
Gist of Idea
A blind man may still contain the idea of colour
Source
René Descartes (Reply to Fifth Objections [1641], 363)
Book Reference
Descartes,René: 'Meditations on First Philosophy etc.', ed/tr. Cottingham,John [CUP 1986], p.79
Related Idea
Idea 22168 Minds take in a likeness of things, which activates an awaiting potential [Aquinas]