Who said "Solitude is not loneliness; it's reflection."?

This quote is attributed to Ruth Handler.

Solitude is not loneliness; it's reflection. - Ruth Handler

"Solitude is not loneliness; it's reflection."

Ruth Handler Solitude

"I wanted to create something that would let girls know that they could be anything they wanted to be."

"A girl should be two things: classy and fabulous."

"The only limit is your imagination."

"Every girl deserves to feel like she can do anything."

"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."