鸿鹄之志

Explanation: Swan: Swan, metaphor ambitious person; Notes: ambition. Analogy lofty aspirations. 　　Usage: Partial official; as subject, object; with compliment 　　Source: Qian Han, "Historical Records Chenshe family": "Jie Hu! Sparrow know that the swan indeed!" 　　Examples: A real man battle ~, according to Aviva talented. (Yuan Zheng Dehui "Wang Can CASTLE" First off) Thesaurus:  a soaring ambition, fly at higher game, honghuzhi