Who said "Being alone isn't so bad when you're by yourself."?

This quote is attributed to Snoopy.

Being alone isn't so bad when you're by yourself. - Snoopy

"Being alone isn't so bad when you're by yourself."

Snoopy Solitude

"I think I'm dying. Send for a doctor immediately!"

"Rats! Another day, another disappointment."

"Sometimes I lie awake at night and ask, 'Is life a multiple choice test or an essay?' Then a dog barks and I realize it doesn't matter."

"I love mankind. It's people I can't stand."

"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."