Who was one of the first authorities to assert that mental illness was a myth; that it does not exist?

Who was one of the first authorities to assert that mental illness was a myth; that it does not exist?

Who was one of the first authorities to assert that mental illness was a myth; that it does not exist? 


A. Albert Ellis
B. David Rosenhan
C. Thomas Szasz
D. Lawrence Kohlberg

Answer: C. Thomas Szasz