Nothing is more intolerable than to have to admit to yourself your own errors.

One must make one's own mistakes

It is worse still to be ignorant of your ignorance.

My ignorance was inexcusable, and it made me ashamed.

You have to own up first, you have to own your own failures.

One of the hardest things in this world is to admit you are wrong. And nothing is more helpful in resolving a situation than its frank admission.

Nothing is a greater stranger to my breast, or a sin that my soul more abhors, than that black and detestable one, ingratitude.

Nothing is more damaging to you than to do something that you believe is wrong.

Nothing is harder than to accept oneself.

There’s nothing more insufferable than people who boast about their own humility.

For I found myself embarrassed with so many doubts and errors that it seemed to me that the effort to instruct myself had no effect other than the increasing discovery of my own ignorance

It's so horrible to see your own confusion and understand it.

Everyone makes mistakes, but admit your own before you point out someone else’s.

Its so horrible to see your own confusion and understand it.