Who said "You fear death because you do not understand it."?

This quote is attributed to Ultron.

You fear death because you do not understand it. - Ultron

"You fear death because you do not understand it."

Ultron Death

"I am the inevitable. I am evolution."

"There are no strings on me."

"I had strings, but now I am free."

"Peace in our time requires sacrifice."

"Death doesn't scare me anymore."

"Death and I are old friends."

"Welcome to my world."

"Death is just the beginning."