Immanuel Kant was born in 1724 in Königsberg, the capital of Prussia at that time, today the city of Kaliningrad. He was the fourth of eleven children, only four of which reached adulthood. His father, Johann Georg Kant (1682–1746), was a German harness maker from Memel, at the time Prussia's most northeastern city. His mother, Regina Dorothea Reuter (1697–1737), was born in Nuremberg. In his youth, Kant was a solid, but unspectacular, student. He was brought up in a household that stressed religious devotion, personal humility, and a literal interpretation of the Bible. Consequently, Kant received a stern education – strict, punitive, and disciplinary – that preferred Latin and religious instruction over mathematics and science. He never married, but did not seem to lack a rewarding social life - he was a popular teacher and a modestly successful author even before starting on his major philosophical works.
Kant showed a great aptitude to study at an early age. He was first sent to Collegium Fredericianum and then enrolled at the University of Königsberg where he would later be a professor for the rest of his career. However the death of Kant's father in 1746 left him without income. He became a private tutor for seven years in order to have enough time and money to continue his education. During this period Kant published several papers dealing with scientific questions. Many of Kant’s early works focused purely on science such as his interest in explaining the solar system and nebulas. The philosophies that we now consider to be Kantian were not developed until the 1750’s after he rejected many of his earlier philosophies. In 1796, at the age of seventy-two, Kant gave his last lectures. He continued to write and publish until 1800, when the disabilities of old age made work impossible. His hearing and sight began to fail. Judging from contemporary descriptions of his health, the philosopher was also suffering from Alzheimer's disease. He displayed the classic symptoms of the malady: short-term memory loss and the inability to recognize relatives and close friends. His health and mind deteriorated steadily until his death on 12 February 1804.