James Turell at the Hayward Gallery

His work as part of the light show at the Hayward gallery in 2013 changed my perspective on light:

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And the earth was without form, and void; and darkness was upon the face of the deep. And God said, Let there be light: and there was light. And God saw the light, and it was good.

Essentially it made me use all other senses and it worked. Brilliant.