Use your eyes–strong eye contact gives the impression of respect and affection. It also gives the impression of being an abstract thinker.
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What makes art in general, and literature in particular, remarkable, what distinguishes them from life, is precisely that they abhor repetition. In everyday life, you can tell the same joke thrice and, thrice getting a laugh, become the life of the party. In art, though, this sort of conduct is called 'cliche.'