Final answer:
In John Donne's 'Song,' the speaker suggests it's impossible to find a woman who is both true and fair.
Step-by-step explanation:
According to the speaker of John Donne's poem Song, often referred to by its first line, "Go and catch a falling star," it is impossible to find a woman who is both true and fair, meaning a woman who is both beautiful and faithful. The poem is a kind of valediction, exploring the theme of the unattainable nature of such paragons of virtue and beauty. Donne's work often reflects on themes of love, faith, and the complexities of human relationships, using metaphysical conceits and paradoxes to convey his messages.