"So there's more than just playing," he said. "I wish it meant only hits, runs, and errors – only the things they put in the box score. Because you know – yes, you would know, Robinson, that a baseball box score is a democratic thing. It doesn't tell how big you are, what church you attend, what color you are, or how your father voted in the last election. It just tells what kind of baseball player you were on that particular day."
I interrupted. "But it's the box score that really counts – that and that alone, isn't it?"
"It's all that ought to count," he replied. "But it isn't. Maybe one of these days it will be all that counts. That is one of the reasons I've got you here, Robinson. If you're a good enough man, we can make this a start in the right direction. But let me tell you, it's going to take an awful lot of courage."
Based on the passage, write one or two sentences explaining Jackie Robinson’s main purpose for writing I Never Had It Made.