At the beginning of the Fair Youth sequence are the procreation sonnets, sonnets 1-17. It is an "entire sonnet sequence...marked not only by a preoccupation with the category of memory, but also by a fascination with the sheer capaciousness and complexity of that category." Sonnet 15 is located at the latter end of this section. Sonnet 15 introduces the idea of the speaker "immortaliz his beloved in verse" (rather than by physical procreation, as in previous sonnets), a theme that continues in sonnets 16 and 17.