吾十有五而志于学

子曰，吾十有五而志于学，三十而立，四十而不惑，五十而知天命，六十而耳顺，七十而从心所欲，不逾矩。

《论语》为政第二.4.020

The Master said, 'At fifteen I set my heart on learning; at thirty I took my stand; at forty I came to be free from doubts; at fifty I understood the Decree of Heaven; at sixty my ear was attuned; at seventy I followed my heart's desire without overstepping the line.'

The Analects of Confucius - Lun Yu II. 4. (20)

这中间几句，恐怕是耳熟能详了，但是很惭愧，我也是最近才注意到第一句的，发现其实那才是最最重要的啊，否则后面的无从谈起。这样一细想，过去的这些光阴，真是有些虚度。但不管怎样，起码从现在起，对于志学这点，吾日三省吾身。我想它作为一生的志向，也未尝不可。过些许日子，看看能否到达后面的阶段。