From
诸葛亮 《诫子书》 ('Admonition to My Son,' c. 234 CE), the deathbed letter to his son
诸葛瞻:
夫学须静也,才须学也,非学无以广才,非志无以成学 (Study requires stillness; talent requires study. Without study there is no way to broaden one's talent; without resolve there is no way to complete one's study). One of the most-quoted self-cultivation texts in Chinese education.