The connection between rationality and self-interest according to Kant is our ability to reason as human beings allows us to determine solutions based on morality. Morality according to Kant should follow the categorical imperative (to act according to the same standard) Kant connects rationality with morality, and sees any contradictory or hypothetical imperative (an act performed for a deliberate end) behavior as immoral. Morality can only be determined through reason and our actions must NOT be based upon our own desires.
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