Experience is simply the name we give our mistakes. —Oscar Wilde

I love him, but I threw him away, like accidentally throwing away a set of keys or a few pieces of change. There could have been something great there, I do believe. How my heart trembles...hurt and weak.
A reputation once broken may possibly be repaired, but the world will always keep their eyes on the spot where the crack was.
—Joseph Hall

...all men make mistakes. But a good man yields when he knows his course is wrong, and repairs the evil. The only crime is pride.
—Sophocles

And last but not least, simply because of how true it really is:

When one's cause is so important that it is worth lying for, it becomes immediately necessary to re-evaluate the cause.
—Col. Brian D. Perry, Sr.