Why according to Kant human being deserves to be given some minimum dignity?

‘Human beings’, unlike all other objects, possess dignity. They are, for this reason valuable in themselves. For the eighteenth century German philosopher, Immanuel Kant, this simple idea had a deep meaning. For it meant that every person has dignity and ought to be so treated by virtue of being a human being. A person may be uneducated, poor or powerless. He may even be dishonest or immoral. Yet, he remains a human being and deserves to be given some minimum dignity