Caroline Moorehead at The Guardian:
In the summer of 1933, four women, all in their 20s, were busy contemplating the meaning of their own existence and the importance of others to it. The word existentialism had not yet been invented, but the quartet were intrigued by the idea of finding a new philosophy, using their own intelligence to change themselves and the world, while working out how the individual and the collective played into the malaise of modern times. Over the next decade, as Wolfram Eilenberger writes, they all crossed paths intellectually, sometimes agreeing, more often not, though it seems that they never actually met.
The eldest was an uncompromising and astute 28-year-old Russian who had got herself to Hollywood and changed her name from Alisa Rosenbaum to Ayn Rand. Through screenplays and fiction she set out to convey what she saw as the struggle for the autonomy of the soul, with “enlightened egoism” as her new vision for the world. Thus Spoke Zarathustra became “something like her house bible” and phrases such as “Nietzsche and I think …” peppered her philosophical notes.
more here.