Less than a month later, Freud was writing to Bernays about the many self-experiments in which he had swallowed various quantities of the drug, finding it useful in relieving brief episodes of depression and anxiety. Later, he described how “a small dose lifted me to the heights in a wonderful fashion. I am just now busy collecting the literature” — in German, French and English — “for a song of praise to this magical substance.”

Full review at The New York Times