Our language has wisely sensed these two sides of man's being alone. It has created the word loneliness to express the pain of being alone. And it has created the word solitude to express the glory of being alone.
Bio: Hillel, son of Gamaliel III, was a Jewish scholar in the 3rd century CE. He was son of Gamaliel III, brother of Judah II, and probably a pupil of his grandfather Judah I.