Meaning of “Love is like the wild rose-briar; Friendship like…”

Sonnet 43 from Sonnets from the Portuguese; the poem proceeds by describing multiple dimensions of love.

Twelfth Night, Act I, Scene 1, Orsino; 1922 Yale Shakespeare edition edited by George Henry Nettleton, printed page 1 / Wikisource scan leaf 13. “If music be the food of love, play on” opens Orsino’s attempt to use excess music to surfeit and extinguish his appetite for love. It remains fictional dramatic speech shaped by Orsino’s self-dramatizing desire, not Shakespeare speaking autobiographically or a modern psychological claim about music and emotion.

The Life of Reason, Reason in Society; the sentence opens a discussion of family bonds and reciprocal interests.

Romeo and Juliet, Act 1, Scene 5.

Emma, Volume III, Chapter XIII, scan-backed 1816 John Murray first edition on Wikisource. George Knightley tells Emma “If I loved you less, I might be able to talk about it more” during his declaration, explicitly contrasting the depth of his feeling with his difficulty making polished speeches.

Essays: First Series, “Friendship” (1841), verified against Project Gutenberg #2944 and the page-numbered 1907 Merrill/Turpin Essays witness in Project Gutenberg #16643, printed page 117. Emerson says “Our intellectual and active powers increase with our affection” before illustrating the claim with a scholar who finds thoughts and language when writing to a friend; it remains literary-philosophical observation rather than a quantified psychological law.