"Of lost leaders, the betrayed, wild escapes. Disguises, clutched at, gone, not here." (U3.243)

Evokes Robert Browning's poem 'The Lost Leader' addressed to Wordsworth. It includes the lines:

We that had loved him so, followed him, honoured him,
Lived in his mild and magnificent eye,
Learned his great language, caught his clear accents,
Made him our pattern to live and to die!

that may apply as well to James Stephens.