“This is something that the novel does better than any other art form: reproducing the inner life and the inner experience of another person, particularly extreme forms of consciousness like grief, dreams, drunkenness, spiritual revelations, even insanity. Unlike movies, where we’re always onlookers, in novels we have the experience of being someone else: knowing another person’s soul from the inside. No other art form does that. And I like dealing with particularly intense inner experiences because I think that in many ways, this is what the novel does best.”

I. Kandinsky's introduction
1910 - 1915, Concerning the Spiritual in Art, 1911

1941 - 1967
Source: 'Statements by Four artists', Edward Hopper, in 'Reality' 1., Spring 1953, p. 8

Karl Marx, in his letter to Ferdinand Lassalle, 31 May 1858 [original in German]
M - R

Lecture III, Some Metaphysical Problems Pragmatically Considered
1900s, Pragmatism: A New Name for Some Old Ways of Thinking (1907)

Original: (it) Quando l'intelletto si fonde con esperienza, creatività, cultura e curiosità, forma una persona di un altro livello.
Source: prevale.net

quoted by Floyd Goodrich, in Edward Hopper, H. Abrams, New York 1971
1941 - 1967

Part II. About painting : VI. The language of Form and Colour : Footnote
Similar quote in another translation:
There is no form, there is nothing in the world which says nothing. Often - it is true - the message does not reach our soul, either because it has no meaning in and for itself, or - as is more likely – because it has not been conveyed to the right place.. .Every serious work rings inwardly, like the calm and dignified words: 'Here I am!'
Partly cited in: Raymond Firth (2011) Symbols: Public and Private, p. 43
1910 - 1915, Concerning the Spiritual in Art, 1911

Source: L’Expérience Intérieure (1943), p. 7

Songs of the Soul (1971)
Context: Science depends on outer experiment. Spirituality depends on inner searching and seeking. A scientist discovers the power that very often threatens even his own life. A spiritual seeker discovers the power that guides and moulds his life into a life of divine fulfilment.