Make the given text more coherent.
As he grew older, he became eccentric and unpredictable, and eventually lost all of Marie's carefully amassed fortune in unwise speculations. He must be recognized as a pioneer in a ballet style that was to alter forever the very nature of the art.
As he grew older, he became eccentric and unpredictable, and eventually lost all of Marie's carefully amassed fortune in unwise speculations. Nevertheless, he must be recognized as a pioneer in a ballet style that was to alter forever the very nature of the art.