All our knowledge has its origin in our perceptions Author: Leonardo da Vinci Copy Quote More from Leonardo da Vinci “If the painter has clumsy hands, he will be apt to introduce them into his work…” “He who possesses most must be most afraid of loss.” “An average human looks without seeing, listens without hearing, touches without…” “Experience is never at fault; it is only your judgment that is in error, in pro…”