Who said "The capacity to be alone is the capacity to love."?

This quote is attributed to Saul Bellow.

The capacity to be alone is the capacity to love. - Saul Bellow

"The capacity to be alone is the capacity to love."

Saul Bellow Solitude

Novelist American 1915–2005

"The main thing is to be kind. Being kind is more important than being right."

"Losing a parent is something like driving through a plateglass window. You didn't know it was there until it was too late to brake."

"The facts about us are not generous; the truth is likely to be humiliating."

"I want to live. The world is disagreeable; it is often impossible and ridiculous—but I want to live."

"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."