Who said "Search your feelings, you know it to be true."?

This quote is attributed to Palpatine.

Search your feelings, you know it to be true. - Palpatine

"Search your feelings, you know it to be true."

Palpatine Truth

"Did you ever hear the tragedy of Darth Plagueis the Wise?"

"The dark side of the Force is a pathway to many abilities some consider to be unnatural."

"Have you ever heard of the tragedy of Darth Plagueis? I thought not."

"Unlimited power!"

"Lucy, you got some 'splainin' to do!"

"You must always be honest with the people you love."

"Truth always comes out in the end."

"Honesty is always the best policy."