Taming is a reference to what the fox is teaching the little prince in the book by Saint Exupery called The Little Prince. In this book the fox is helping the Prince to understand what it means to care about others that the fox calls "taming" others. The Prince learns that because he cares for and loves the rose that is on his planet, his rose is special for him even when he is seeing hundreds of identical looking roses in front of him. The fox tells the Prince that because he spent time getting to know his rose and slowly learning about his rose, his rose is special to him compared to all the roses that he is looking at. The fox then teaches the Prince that "it is only with the heart that one can see rightly, what is essential is invisible to the eye." The fox tells the Prince that when you tame something, you then have ties to each other and will forever be unique to each other.
If we all choose to tame others and develop a relationship with them it would help bridge the gap that seems to separate a lot of us. It does actually seem that what is essential in our lives has to do with forming relationships with others.