Final answer:
Freud's belief that mental illness is caused by injury to the body or brain does not describe his beliefs. He focused on the unconscious mind, powerful instincts, and desires, and the struggle to repress these forces leading to mental illness.
Step-by-step explanation:
One of Freud's beliefs that does not describe him is that mental illness is caused by injury to the body or brain. Freud focused on the unconscious mind and the powerful instincts and desires that drive it, as well as the struggle to repress these forces leading to mental illness. He also believed that the mind has conscious and unconscious parts and that the unconscious mind plays a significant role in shaping behavior.