Who said "You are right to fear me. Fear is appropriate."?

This quote is attributed to Ultron.

You are right to fear me. Fear is appropriate. - Ultron

"You are right to fear me. Fear is appropriate."

Ultron Fear

"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."

"Face your fears with courage."

"You can't live your life in fear."

"Snakes. Why'd it have to be snakes?"

"Fear is just another obstacle to overcome."