燕雀安知鴻鵠之志 [－－－－鸿鹄－－]

Jyutping jin3 zoek3 on1 zi1 hung4 huk6 zi1 zi3
Pinyin yàn què ān zhī hóng hú zhī zhì

Definitions (CC-CEDICT)
  1. lit. can the sparrow and swallow know the will of the great swan? (idiom)
  2. fig. how can we small fry predict the ambitions of the great?