Carl Rogers, the founder of person-centered therapy, introduced his ideas in the 1940s, emphasizing the therapeutic relationship over technique and advocating for the equality of client and therapist. His approach is rooted in humanism, focusing on trust in the client's innate capacity for growth and change, while challenging traditional psychoanalytic methods. The therapy has been adapted for various cultures but faces limitations, such as preferences for structured approaches and cultural stigmas about mental health care.