Who said "This is the way of the Sith."?

This quote is attributed to Palpatine.

This is the way of the Sith. - Palpatine

"This is the way of the Sith."

Palpatine Philosophy

"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!"

"I've seen the worst humanity has to offer."

"Sometimes I wonder if the world is worth saving."

"Every choice shapes our destiny."

"Order is the foundation of a good life."