Who is Lou Andreas-Salome from The Art of Seduction and what is their importance?

This was a philosopheress in the 1800's in Europe. She spent time with men in her field. The effect was unexpected and astounding, from the female side and from the male side, but different. This pioneering woman in the field of philosophy, in a culture and era where most women were entirely excluded from it, made great inroads but came out of it labeled as one of Europe's most accomplished seductresses, even though she did not have sexual relations with the vast majority of her victims.