有教无类

In teaching there should be no distinction of classes.

当仁不让于师

When it comes to benevolence, one need not give precedence even to his teacher.

学而时习之

Is it not pleasant to learn and practice regularly？

德不孤，必有邻

Virtue is not left to stand alone； those who practice it will have neighbors.

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

At fifteen I set my heart upon learning. At thirty, I planted my feet firm upon the ground. At forty, I no longer suffered from perplexities. At fifty, I knew what were the biddings of Heaven. At sixty, I heard them with docile ear. At seventy, I could follow the dictates of my own heart； for what I desired no longer overstepped the boundaries of right.

君子以文会友，以友辅仁

The superior man on grounds of culture meets with his friends, and by their friendship helps his virtue.

三军可夺师也，匹夫不可夺志也

An army may seize a general, but a man's will cannot be taken from him.

观过，斯知仁矣

By reflecting on one's mistakes, one understands benevolence.

性相近也，习相远也

By nature, men are nearly alike； by practice, they get to be wide apart.

己所不欲，勿施于人

What you do not want done to yourself, do not do to others.

以上翻译均基于权威文献整理，涵盖教育、品德、人生哲理等核心思想。