Abstract
SUMMARY: What Leonardo da Vinci said about the colours, hardly only has to with painting. Gregorius Reisch (†1525) treats some opinions on the colours. Alessandro Piccolomini (1508-1578) occupied himself with the rainbow. Simon Potius (1496-1554) sees a relation between the colours and the four elements, while Bernardino Telesio (1508-1588) points
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