Letter to William H. Channing(?)
p99“To speak with open heart and "tongue affectionate and true,"—to enjoy real repose and the consciousness of a thorough mutual understanding in the presence of friends when we do meet”
Fuller, Margaret. The Letters of Margaret Fuller. Edited by Robert N. Hudspeth. Vol. III. Ithaca: Cornell University Press, 1986.
Inferred Fuller quotes "tongue affectionate and true" in quotation marks, indicating an external source that comes from Wordsworth's "The Fountain" (in Lyrical Ballads, 1800): "We talked with open heart, and tongue / Affectionate and true." Fuller's broader phrasing—"to speak with open heart and 'tongue affectionate and true'"—mirrors the Wordsworth context of intimate friendship, and the quotation marks signal she is citing a recognized source, though she provides no attribution.