Who said "I've learned that in this world, nothing is certain."?

This quote is attributed to Tyrion Lannister.

I've learned that in this world, nothing is certain. - Tyrion Lannister

"I've learned that in this world, nothing is certain."

Tyrion Lannister Philosophy

"I am of the night."

"The dwarf lives until we find a way to make him leave."

"I drink and I know things."

"Never forget what you are, for surely the world will not."

"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."