the only virtue

I've gotten myself convinced in the last year that courage is the only virtue.  And by extension, that cowardice is the only vice.  Every other virtue is either a particularized form of courage, or is actually cowardice in disguise.  More on that another time.  For now,  here's the table I have so far.  Cells to the right are more particularized forms of cells to the left.  I have each virtue paired with its equivalent vice for brevity.

 

Is there another virtue that should be on this chart?
Is it a form of courage?