Literature Reference: 尧，古之圣王也。——《尚书·尧典》 Yao, the ancient sage king. Source from 'Shangshu·Yao Dian'.
至: Arrive; reach the pinnacle, the utmost, attaining the zenith.
尧: Ancient emperor's name, symbolizing a person of both virtue and talent.
Meaning: To aspire to the supreme virtue, emulating the wisdom and benevolence of Yao.