All by myself
The drawbacks—and benefits—of solitude

Three books examine the perils and pleasures of being alone

All the Lonely People. By Sam Carr. Picador; 256 pages; £11.99. To be published in America in December; $28.99

Solitude. By Netta Weinstein, Heather Hansen and Thuy-vy Nguyen. Cambridge University Press; 300 pages; $25.95 and £20

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