"Be careful how you do one man a pleasure which must needs occasion equal displeasure in another. For he who is thus slighted will not forget, but will think the offence to himself the greater in that another profits by it; while he who receives the pleasure will either not remember it, or will consider the favour done him less than it really was."

Source : Francesco Guicciardini (1890). “Counsels and Reflections of Francesco Guicciardini”

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