"When
a reaction is primary, 'the idea'
is no longer enough
to motivate creation. Secondary response is perceived as a
sustainable and orderly
action of all experiences,
which is equivalent to a large excessive broadening
of the content of consciousness.
"- reference Gerardus Heymans in edition
of Denis Huisman
'Aesthetics' 1964
https://en.wikipedia.org/wiki/Van_Gogh_self-portrait_(1889)
“The road to creativity passes so close to
the madhouse and often detours or ends there.”