Sharing can be understood in different ways: one can share a meal with a family, or share a flat in different rooms with other roommates: in this case diversity is done with unity.
One can also share an apartment with a friend or share ideas in a meeting in which case one makes rather of unity with diversity.
Sharing can also be abstract when you say that you share your life with someone, share your joy, your grief but can you share everything? Can we share his suffering, his anguish, his shame, his power? Balsac said: "we do not share a mother's heart."