The Man who says he can, and the man who says he can not.. Are both correct

Let every man consider virtue as what devolves on himself. He may not yield the performance of it even to his teacher.

A man who has committed a mistake and does not correct it is committing another mistake.

The Master said, The case is like that of someone raising a mound. If he stops working, the fact that it perhaps needed only one more basketful makes no difference; I stay where I am. Whereas even if he has not got beyond leveling the ground, but is still at work, the fact that he has only tilted one basketful of earth makes no difference. I go to help him.

Wouldst thou know if a people be well governed, or if its laws be good or bad, examine the music it practices.

At 15 I set my heart on learning; At 30 I firmly took my stand; At 40 I had no delusions; At 50 I knew the Mandate of Heaven; At 60 my ear was attuned; At 70 I followed my heart's desire without overstepping the boundaries of right.

Some are born with knowledge, some derive it from study, and some acquire it only after a painful realization of their ignorance. But the knowledge being possessed, it comes to the same thing. Some study with a natural ease, some from a desire for advantages, and some by strenuous effort. But the achievement being made, it comes to the same thing.