Without the legacy of Plato, Descartes, or Machiavelli, expressions such as “Platonic love”, “Cartesian mind” or “Machiavellian plan” would not exist. Without the philosophy of Immanuel Kant, some words would not be what they are.

Without Kant's philosophical work, some everyday words would not be so common in our vocabulary. If you want to support the production of quality journalism, subscribe to CNN.com. Back to the page you came from. Click here to read the rest of the article. For confidential support call the Samaritans on 08457 90 90 90 90, visit a local Samaritans branch or see www.samaritans.org for details. In the U.S., call the National Suicide Prevention Line on 1-800-273-8255 or visit www.suicidepreventionlifeline.org. In Europe, contact the National Suicide Prevention Lifeline on 0800-825-7255 or click here.