Who said "Sometimes one must be willing to walk a lonely road."?

This quote is attributed to Thanos.

Sometimes one must be willing to walk a lonely road. - Thanos

"Sometimes one must be willing to walk a lonely road."

Thanos Solitude

"I am inevitable."

"The hardest choices require the strongest wills."

"Perfectly balanced, as all things should be."

"You should have aimed for the head."

"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."