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Man is, beyond dispute, the most excellent of created beings, and the vilest animal is a dog; but the sages agree that a grateful dog is better than an ungrateful man.

Saadi, Francis Gladwin, Eric Serejski (2016). “Gulistan or Rose Garden”, p.166, Innovations and Information
Man is, beyond dispute, the most excellent of created beings, and the vilest animal is a dog; but the sages agree that a grateful dog is better than an ungrateful man.