Shall I compare thee to a summer's day?

Thou art more lovely and more temperate:

Rough winds do shake the darling buds of May,

And summer's lease hath all too short a date

—“Sonnet 18,”
William Shakespeare

In the first quatrain, the speaker is comparing

summer and winter.
his beloved and a summer day.
spring flowers and the wind.
a date and a summer day.