Conversation so far:
What is The Parable Series?
Octavia E. Butler published two novels later designated as the Parable (or Earthseed) series.
What happened in 1993 to Octavia Butler?
Parable of the Sower is a 1993 science fiction novel by American writer Octavia E. Butler.
Was the Parable of the Sower successful?
Parable of the Sower and Parable of the Talents solidified Octavia E. Butler's fame as a writer.
When was Octavia E. Butler's second book published?
1977
When was the third book by Octavia E. Butler published?
The third book of the series, Survivor, was published in 1978.

Question: Which of these books was her most successful?
Self-contained rewrite: Which of Octavia E. Butler's books was her most successful?