Who said "I would go down to the river and have a long think."?

This quote is attributed to Huckleberry Finn.

I would go down to the river and have a long think. - Huckleberry Finn

"I would go down to the river and have a long think."

Huckleberry Finn Solitude

Character in The Adventures of Huckleberry Finn

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"I reckon I got to light out for the Territory ahead of the rest, because Aunt Sally she's going to adopt me and sivilize me"

"All right, then, I'll go to hell"

"It was a close place. I took it up, and held it in my hand. I was a trembling, because I'd got to decide, forever, betwixt two things"

"I never wanted to go much before"

"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."