He hopes that one day he can spread his wings and soar.
Tips
culture
In mainland Chinese Disney translations, Goofy is 高飞 (Gāofēi), while Hong Kong and Taiwan use 高飞狗. The name is a direct phonetic approximation of 'Goofy' that also happens to mean 'fly high' — a tidy bilingual pun.
usage
As a verb phrase 展翅高飞 (zhǎnchì gāofēi, 'spread wings and soar') is a common blessing for graduates or departing friends.