Who said "Emotion clouds judgment. I must be cold. I must be strong."?

This quote is attributed to Kylo Ren.

Emotion clouds judgment. I must be cold. I must be strong. - Kylo Ren

"Emotion clouds judgment. I must be cold. I must be strong."

Kylo Ren Strength

"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."

"Strength comes from within."

"A woman should be proud of who she is."

"A strong woman can overcome anything."

"The only thing I'm good at is killing."