Virtues (7)

"Now, we shall find that virtue is one, but that vice has several forms."
Plato -Republic

C.S. Lewis discusses the oneness of virtue further in his book the Problem of Pain. He points to the virtues as being one and together, quoting Plato above, and discussing this further on his own merits.

We, therefore, cannot divide a particular virtue from the whole; otherwise, we have destroyed the whole fabric and are working on something else. In a word, we have destroyed virtue and choosen an inferior path.

the seven virtues are as follows, the top four being cardinal virtues and the other three theological virtues:
Temperance
Prudence
Fortitude
Justice
Faith
Hope
Love (Charity)

If one of these seven are ommitted and say that six will be enough, then the mark has been missed! One may think themselves virtuous by practicing 5 out of 7 or 6 out of 7, but they are only serving the temporal and the ego. The seven virtues work together as one and cannot be practiced semper fidelis for very long if lacking Fortitude. Or practice virtue fairly if lacking Justice. Or practice virtue with economia [Spirit of the law rather than the letter] without Charity.