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A categorical imperative would be one which represented an action as objectively necessary in itself, without reference to any other purpose.

Act that your principle of action might safely be made a law for the whole world.

All natural capacities of a creature are destined to evolve completely to their natural end.

All our knowledge begins with the senses, proceeds then to the understanding, and ends with reason. There is nothing higher than reason.

All our knowledge falls with the bounds of experience.

All the interests of my reason, speculative as well as practical, combine in the three following questions: 1. What can I know? 2. What ought I to do? 3. What may I hope?

All thought must, directly or indirectly, by way of certain characters, relate ultimately to intuitions, and therefore, with us, to sensibility, because in no other way can an object be given to us.

Always recognize that human individuals are ends, and do not use them as means to your end.

Beneficence is a duty.

By a lie a man throws away and, as it were, annihilates his dignity as a man.