Tolstoy's famous definition of the process of art is expressed in these words: 'To evoke in oneself a feeling one has experienced, and having evoked it in oneself, then by means of movement, lines, colours, sounds, or forms expressed in words so to transmit that feeling that others experience the same feeling -- this is the activity of art.
'Art is a human activity consisting in this, that one man consciously, by means of certain signs, hands on to others feelings he has lived through, and that others are infected by these feelings and also experience them.'
Herbert Read, The Meaning of Art, Pelican Books, London, 1950, pages 185 - 186.