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Emil Kraepelin was born on February 15, 1856. He was a German psychiatrist who is considered one of the founders of modern psychiatry. Kraepelin's work on the classification of mental illness had a major impact on the field and is still used today. He is best known for his distinction between dementia praecox and manic-depressive insanity, which laid the foundation for the modern concept of schizophrenia and bipolar disorder.