ex-wife Jennifer Garner, calling her a great mother to his children.
The actor, in an interview to Times Talk at New York University's Skirball Center for Performing Arts, spoke about his career, his movie choices including his most recent film, "Live by Night", which he has written, produced, directed and stars.
Affleck says he counts his three children -- Violet, Samuel and Seraphina as his biggest achievement.
"In my career or otherwise, it is the birth of my children," he said when asked about his biggest accomplishment.
Affleck said Garner is the "greatest mom in the world".
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