Who said "To live fully, one must first learn to be alone."?

This quote is attributed to Federigo Tozzi.

To live fully, one must first learn to be alone. - Federigo Tozzi

"To live fully, one must first learn to be alone."

Federigo Tozzi Solitude

Novelist Italian 1883–1920

"Life is what happens while you're making other plans"

"Love is the only force capable of transforming an enemy into a friend"

"The only true wisdom is in knowing you know nothing"

"Happiness is not by chance, but by choice"

"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."