Stars in My Pocket Like Grains of Sand

I read Samuel R. Delany's Stars in My Pocket Like Grains of Sand in college, and I remembered it as a wash of gorgeous language with interstellar travel and struggles with one's own desires. Today, looking for a strong first sentence, I reopened it and found this absolutely chilling line.

Delany clearly knows the extra weight a word gains at the end of a sentence. This entire opening hinges on the word "slave." Almost all the other words are simple, work-a-day, single syllable words that we use in many contexts until they are worn to neutrality. "Honesty" is a little less common, and usually refers to a virtue. "Of course" is a relaxed way to say something is normal. So here we have normality and virtue hitting the appalling concept of "slave." All the apparent banality suddenly turns into horror.

And now we have questions. Who could so casually tell someone they will be a slave? Does the person called "you" have any choice here? Why would that person find themselves at this bleak point? What happens next?

I was drawn to reading on, and continued several pages before I remembered I only came for the first sentence.