1.2.1: An Introduction to Kantian Ethics

Immanuel Kant was born in 1724 in Königsberg in East Prussia, where he died in 1804. Kant is famous for revolutionising how we think about just about every aspect of the world — including science, art, ethics, religion, the self and reality. He is one of the most important thinkers of all time, which is even more remarkable by the fact that Kant is a truly awful writer. His sentences are full of technical language, are very long, and are incredibly dense. You have been warned!

Kant is a rationalist writing during the Enlightenment (1685–1815). He thinks that we can gain knowledge from our senses and through our rational capacities. This means his general philosophical approach starts by asking what we can know a priori.

This is key to understanding his work but also makes his writing on ethics seem a bit odd. We think the study of ethics — unlike say maths — ought to direct our eye to what is going on around us in the world. Yet Kant starts by turning his eyes “inward” to thinking about ethical ideas.

Kant believes that in doing this people will come to recognise that certain actions are right and wrong irrespective of how we might feel and irrespective of any consequences. For Kant, actions are right if they respect what he calls the Categorical Imperative. For example, because lying fails to respect the Categorical Imperative it is wrong and is wrong irrespective of how we might feel about lying or what might happen if we did lie; it is actions that are right and wrong rather than consequences. This means that Kant’s theory is deontological rather than teleological. It focuses on our duties rather than our ends/goals/consequences.

There is, however, something intuitive about the idea that morality is based on reason rather than feelings or consequences. Consider my pet cat Spartan. He performs certain actions like scrabbling under bed covers, meowing at birds and chasing his tail. Now consider my daughter Beth, she performs certain actions like caring for her sister and helping the homeless.

Spartan’s actions are not moral whereas Beth’s actions are. Spartan’s thinking and actions are driven by his desires and inclination. He eats and plays and sleeps when he desires to do so, there is no reasoning on his part. Beth, in contrast, can reflect on the various reasons she has, reasons to care for her sister and the homeless.

We might think then that humans are moral beings not because we have certain desires but precisely because we are rational. We have an ability to “stand back” and consider what we are doing and why. Kant certainly thought so and he takes this insight as his starting point.