Who said "I feel nothing. That is my strength."?

This quote is attributed to Kylo Ren.

I feel nothing. That is my strength. - Kylo Ren

"I feel nothing. That is my strength."

Kylo Ren

"I feel it again... the pull to the light."

"Supreme Leader Snoke believes you are the future, but you continue to fail."

"Forgive me. I feel it again, the pull to the light."

"Show me again. The power of the darkness."