Who said "Alone time helps you think clearly."?

This quote is attributed to Kenny McCormick.

Alone time helps you think clearly. - Kenny McCormick

"Alone time helps you think clearly."

Kenny McCormick Solitude

"Mmph mmph mrmph!"

"I'm not fat, I'm just big boned"

"Dude, we're in third grade"

"This is so cool"

"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."