If you have integrity, nothing else matters.  If you don't have integrity, nothing else matters. 

There is no pillow so soft as a clear conscience.

Dignity consists not in possessing honors, but in the consciousness that we deserve them.

Better keep yourself clean and bright; you are the window through which you must see the world. 

I have never known a greater miracle, or monster, than myself.

Not being able to govern events, I govern myself.