Isadora Duncan was born on this day in San Francisco California. Isadora is known as the mother of "modern dance," founding the "New System" of interpretive dance, blending together poetry, music and the rhythms of nature. She did not believe in the formality of conventional ballet and gave birth to a more free form of dance, dancing barefoot and in simple Greek apparel. Her fans recognized her for her passionate dancing and she ultimately proved to be the most famous dancer of her time.