The speaker in Sara Teasdale’s “I Know the Stars” begins by describing all she can read and understand: the stars by name and path, and people’s hidden thoughts by the look in their eyes. That knowledge has made her sad and wise. But the person she addresses remains a mystery. Their eyes seem to call to her, yet she cannot tell whether they love her or feel nothing at all. For all her insight, this one question stays closed. The final stanza turns that uncertainty into quiet sorrow: she knows many things, but as the years pass she expects to die without ever learning the thing she most longs to know. The mood is wistful and lonely, built on the contrast between vast knowledge and a single, painful blank.
"I Know the Stars" — Summary
I know the stars by their names, Aldebaran, Altair, And I know the path they take Up heaven's broad blue stair.
I know the secrets of men By the look of their eyes, Their gray thoughts, their strange thoughts Have made me sad and wise.
But your eyes are dark to me Though they seem to call and call-- I cannot tell if you love me Or do not love me at all.
I know many things, But the years come and go, I shall die not knowing The thing I long to know.