Early Life and Education
Stanislav Grof was born on 1 July 1931 in Prague, Czechoslovakia. He studied medicine at Charles University School of Medicine in Prague, earning his M.D., and subsequently received a Ph.D. (Doctor of Philosophy in Medicine) from the Czechoslovak Academy of Sciences. His early training was in Freudian psychoanalysis, and he was fully prepared for a conventional psychiatric career when a single experience redirected the trajectory of his life.

The LSD Revelation in Prague
In 1956, the Sandoz pharmaceutical company sent a shipment of LSD-25 to the Psychiatric Research Institute in Prague for experimental investigation. Grof, then a young resident, volunteered as a subject. During his first LSD session, he experienced what he later described as a "cosmic consciousness" event of shattering intensity -- a radiance that he compared to the light described in the Tibetan Bardo Thodol (Book of the Dead). "That experience," he wrote, "created in my mind a lasting, unforgettable impression that consciousness and the human psyche are far greater than what is suggested by mainstream academic psychology and psychiatry."
This session launched what would become one of the most extensive clinical research programmes into psychedelic therapy in history. Between 1960 and 1967, Grof served as principal investigator at the Psychiatric Research Institute in Prague, conducting and supervising over 4,000 LSD sessions with patients suffering from a range of psychiatric conditions, including depression, anxiety, psychosomatic disorders, and addiction. His meticulous clinical notes from this period -- thousands of session transcripts and follow-up interviews -- became the empirical foundation for his later theoretical work.