Sonnet 14 that Shakespeare's early comedy included a line stating "From women's eyes this doctrine I derive." In the context of Sonnet 14 it is explaining the important of procreation, and that it is necessary. Ovid's "Amores" has a similar line "at mihe te comitem auroras usque futuram- per me perque oculos, siders rostra, tuos." Both Samuel Johnson and George Steevens noted the similar meaning and that it indicates Roman influence on Shakespeare's poetry. Lines 10-11 are saying that one can see that truth and beauty would thrive together; if only you would focus on the business of making provisions for yourself.
Sonnet 2 child and thereby protect himself from reproach by preserving his beauty against Time's destruction. Sonnet 2 begins with a military siege metaphor, something that occurs often in sonnets and poetry — from Virgil (‘he ploughs the brow with furrows’) and Ovid (‘furrows which may plough your body will come already’) to Shakespeare’s contemporary, Drayton, “The time-plow’d furrows in thy fairest field.” The image is used here as a metaphor for a wrinkled brow. Trenches are also carved into a field when a farmer plows, and the agricultural connotation is touched on two lines later with the image of worthless weeds.