"People like Spencer Tracy held up because they had the background originally, but to this day they never have changed Mr. Gable's role, or most of them"

In the quote by Jackie Cooper, he reflects on the long-lasting impact and versatility of actors within the Hollywood system, focusing specifically on Spencer Tracy and Clark Gable. Cooper starts by mentioning Spencer Tracy, an actor known for his flexibility and depth. When Cooper says, "People like Spencer Tracy held up due to the fact that they had the background originally", he recommends that Tracy's strong fundamental abilities, maybe in theater or a varied set of acting experiences, enabled him to sustain a long and effective profession in Hollywood. Tracy's flexibility and ability to take on different functions likely contributed to his long lasting tradition.

On the other hand, Cooper turns to Clark Gable, another Hollywood icon, keeping in mind, "to this day they never have altered Mr. Gable's role, or most of them". Here, Cooper implies that Gable's roles have stayed relatively consistent throughout his profession, likely describing the kind of charismatic, manly, and typically romantic leading man functions that Gable was well-known for. Regardless of this typecasting, Cooper acknowledges that Gable's persona was so engaging and well-suited to these roles that there was little necessity or industry pressure to change his on-screen image.

By juxtaposing these 2 stars, Cooper illuminates different paths to cinematic success: one through adaptability and varied ability, as seen in Tracy's body of work, and the other through a constant and steadfast screen personality, as exhibited by Gable. Both actors handled to "hold up" in time, however they represent different archetypes within the film industry-- a place where both flexibility and a strong, changeless image can similarly ensure longevity and success. Cooper's observations prompt reflection on the nature of celebrity and profession durability within Hollywood, revealing how various methods can result in continual fame and impact.