Who said "I've learned that loneliness comes in many forms."?

This quote is attributed to Aquaman (DCEU).

I've learned that loneliness comes in many forms. - Aquaman (DCEU)

"I've learned that loneliness comes in many forms."

Aquaman (DCEU) Solitude

"I'm a king. Kings don't run."

"The surface world has much to learn about respect."

"My people have watched you from below for centuries."

"I didn't come here to fight you."

"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."