Complex sentence: Astaire agonized during the entire process, frequently asking colleagues for acceptance for his work, as Vincente Minnelli stated, He lacks confidence to the most enormous degree of all the people in the world.
Split into simpler sentences: Astaire agonized during the entire process, frequently asking colleagues for acceptance for his work. As Vincente Minnelli stated, He lacks confidence to the most enormous degree of all the people in the world.