Shelleyan Lyric Criticism by T.S. Eliot

The specific critical observation attributing “signs of adolescence" to Shelley's lyrics was made by T.S. Eliot.

T.S. Eliot, a prominent modernist critic and poet, discussed Percy Bysshe Shelley's work, including his lyrics, in his critical writings. Eliot famously critiqued Shelley, suggesting that his poetry, while passionate, lacked a certain maturity or intellectual rigor, which he characterized as adolescent.

This assessment contrasts with other critics who might have focused on different aspects of Shelley's poetry.

Identifying the Critic

• T.S. Eliot: Identified "signs of adolescence" in Shelley's lyrics, implying a lack of mature perspective.
• F.R. Leavis: Known for his rigorous critical standards, often focusing on moral seriousness in poetry.
• Cleanth Brooks: A leading New Critic, focusing on the internal structure and ambiguity of poetic language.
• I.A. Richards: Focused on the psychology of literary response and meaning.

Therefore, T.S. Eliot is the critic associated with the specific phrase used in the question.