Who said "I have learned much in my years of solitude."?

This quote is attributed to Voldemort.

I have learned much in my years of solitude. - Voldemort

"I have learned much in my years of solitude."

Voldemort Solitude

"There is no good and evil, there is only power, and those too weak to seek it."

"I have grown stronger than I was, more terrible, more powerful."

"Fear of a name increases fear of the thing itself."

"Failure and death they are but shadows to me."

"Sometimes being the best means being the loneliest."

"Solitude gives us time to reflect on what matters"

"I'm not good with people, never have been."

"I feel like I'm disappearing."