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  #339  
قديم 02-13-2015, 03:06 AM
 




Shadow is the obstruction of light.
Shadows appear to me to be of supreme importance in perspective, because,
without them opaque and solid bodies will be ill defined
; that which is contained within their outlines and their boundaries themselves will be
ill-understood unless they are shown against a background of a different tone from themselves.

Leonardo da Vinci


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