子曰:“学而时习之,不亦说乎?”Confucius Said,"Is it not pleasant to learn with a constant perseverance and application?"子曰く、学びて時にこれを習う、亦説ばしからずや。
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。”Confucius said, "At fifteen, I had my mind bent on learning.At thirty, I stood firm.
子曰:“学而不思则罔,思而不学则殆。”Confucius Said,"Learning without thought is labor lost; thought without learning is perilous.