Who said "I did it for me. I liked it. I was good at it."?

This quote is attributed to Walter White.

I did it for me. I liked it. I was good at it. - Walter White

"I did it for me. I liked it. I was good at it."

Walter White Truth

"I am the one who knocks."

"You asked me if I was in the meth business or the money business. Neither. I'm in the empire business."

"A man provides. And he does it even when he's not appreciated or respected or loved."

"I did it for me. I liked it."

"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."