What Philosophers said about Virtue

Books from philosophers born 470 BC to 1588 were analyzed and every sentence that mentioned Virtue was highlighted and organized into a mind map. Definitions that are similar to each other were colored the same and the conversation is visualized:

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After that is is possible to organize the definitions by group:

After analyzing the words organized by group a reflection is made for what would be the conclusion. Even though it might constantly change after adding more books to the study, the one I arrived at for now is that virtue is: 

To have consistency with courage and balance with choice