"Solitude lies at the lowest depth of the human condition. Man is the only being who feels himself to be alone and the only one who is searching for the Other."

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In the end, we know what makes us happy. We also know what makes us unhappy. That's the irony. We know and yet we still mess it up. That's part of the human condition, no, and why we need to work on it.

— Harlan Coben