Critique of Pure Reason

According to Wikipedia: "Immanuel Kant (22 April 1724 – 12 February 1804) was an 18th-century German philosopher from the Prussian city of Königsberg (now Kaliningrad, Russia). He is regarded as one of the most influential thinkers of modern Europe and of the late Enlightenment. Kant created a new widespread perspective in philosophy which is influencing enlightened philosophy until the 21st Centu...