Sigmund Freud was the first psychoanalyst. Many of his insights into the human mind, which seemed so revolutionary at the turn of the century, are now widely accepted by most schools of psychological thought. Although others before and during his time had begun to recognize the role of unconscious mental activity, Freud was the preeminent pioneer in understanding its importance. Through his extensive work with patients and through his theory building, he showed that factors which influence thought and action exist outside of awareness, that unconscious conflict plays a part in determining both normal and abnormal behavior, and that the past shapes the present. Although his ideas met with antagonism and resistance, Freud believed deeply in the value of his discoveries and rarely simplified or exaggerated them for the sake of popular acceptance. He saw that those who sought to change themselves or others must face realistic difficulties. But he also showed us that, while the dark and blind forces in human nature sometimes seem overwhelming, psychological understanding, by enlarging the realm of reason and responsibility, can make a substantial difference to troubled individuals and even to civilization as a whole.
Building on such ideas and ideals, psychoanalysis has continued to grow and develop as a general theory of human mental functioning, while always maintaining a profound respect for the uniqueness of each individual life. Ferment, change, and new ideas have enriched the field, and psychoanalytic practice has adapted and expanded. But psychoanalysts today still appreciate the persistent power of the irrational in shaping or limiting human lives, and they therefore remain skeptical of the quick cure, the deceptively easy answer, the trendy or sensationalistic. Like Freud, they believe that psychoanalysis is the strongest and most sophisticated tool for obtaining further knowledge of the mind, and that by using this knowledge for greater self-awareness, patients free themselves from incapacitating suffering, and improve and deepen human relationships.