“Music has been a shaping force… music has been there to guide the development of human nature.”

Source: Real Presences (1989), III: Presences, Ch. 6 (p. 218).

This is Your Brain on Music (2006)
Context: It is only in the last five hundred years that music has become a spectator activity—the thought of a musical concert in which a class of "experts" performed for an appreciative audience was virtually unkown throughout our history as a species. And it has only been in the last hundred years or so that the ties between musical sound and human movement have been minimized.

This is Your Brain on Music (2006)

An Open Letter To Miles Davis (1955)
Context: I think my own way. I don't think like you and my music isn't meant just for the patting of feet and going down backs. When and if I feel gay and carefree, I write or play that way. When I feel angry I write or play that way — or when I'm happy, or depressed, even.
Just because I'm playing jazz I don't forget about me. I play or write me, the way I feel, through jazz, or whatever. Music is, or was, a language of the emotions. If someone has been escaping reality, I don't expect him to dig my music, and I would begin to worry about my writing if such a person began to really like it. My music is alive and it's about the living and the dead, about good and evil. It's angry, yet it's real because it knows it's angry.

On his musical work
Ebony interview (2007)

Opera and Drama (1851)

https://books.google.hr/books?id=_hMEAAAAMBAJ
Vangelis Prepares For Blastoff On Musical Mission To Mars
Maria Paravantes
August 25, 2001
Billboard
113
34
50
0006-2510
2001

The Liberation of Sound: An Introduction to Electronic Music (Prentice-Hall edition, 1972)