Who said "Loneliness is the poverty of self"?

This quote is attributed to Monte Cristo.

Loneliness is the poverty of self - Monte Cristo

"Loneliness is the poverty of self"

Monte Cristo Solitude

Character in The Count of Monte Cristo

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"Revenge is the lash of the scorpion."

"I am no bird; and no net ensnares me."

"My heart is a sepulcher in which I have entombed my past."

"Blessed are the merciful, for they shall obtain mercy."

"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."