Daniel Paul Schreber was a German judge suffering from schizophrenia. He described his condition in his book Memoirs of My Nervous Illness (original German title Denkwürdigkeiten eines Nervenkranken). The book was influential in psychology. Sigmund Freud put his own interpretation on Schreber's case.

References

Daniel Paul Schreber: Memoirs of My Nervous Illness (ISBN 094032220X)