燕雀焉知鸿鹄之志

yàn què yān zhī hóng gǔ zhī zhì

lit. can the sparrow and swallow know the will of the great swan? (idiom); fig. how can we small fry predict the ambitions of the great?

yàn

variant of 燕[yan4]

què

(bound form) small bird

yān

where

zhī

to know

鸿

hóng

eastern bean goose

center or bull's eye of an archery target (old)

zhī

(possessive particle, literary equivalent of 的[de5])

zhì

sign