Malthus was a friend of humanity, but, with ill-founded moral principles, the friend of humanity is the devourer of humanity, without mentioning his pride; for, touch the vanity of one of these numberless philanthropists, and to avenge his self-esteem, he will be ready at once to set fire to the whole globe; and to tell the truth, we are all more or less like that.
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He wants to avenge the murder of his brother
You are the representative of justice here, and it is for justice to avenge those she has been unable to protect.