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

This quote is attributed to Henry James.

The capacity to be alone is the capacity to love - Henry James

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

Henry James Solitude

Novelist American 1843–1916

"The only obligation to which in advance we may hold a novel, is that it be interesting."

"Three things in human life are important. The first is to be kind. The second is to be kind. The third is to be kind."

"All life comes back to the question of our speech - the medium through which we communicate with each other."

"The greatest thing a human soul ever does in this world is to see something, and tell what it saw in a plain sentence."

"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."