I find it wholesome to be alone the greater part of the time. To be in company, even with the best, is soon wearisome and dissipating. I love to be alone. I never found the companion that was so companionable as solitude.

Henry David Thoreau

Studies by psychologist Hans Eysenck show that introverts require less stimulation from the world in order to be awake and alert than extroverts do. Introverts are more easily over-stimulated.

Due to introverts’ sensitivity to dopamine, they need less of it to feel happy. Extroverts’ brains run on an energy-spending nervous system, whereas introverts’ brains run on an energy-conserving nervous system. This is why introverts feel content and energised when reading a book, thinking deeply, or diving into their rich inner world of ideas.

Ergo, time spent alone is time well spent.