Why is the love of one's neighbor not a solid basis for living well together?

The real groundwork is getting rid of your beliefs and fears.

Let us recall here the four stages of the effective treatment of a problem:
1. Recognize the problem.
2. Conduct a serious analysis.
3. Develop a solution, often partial.
4. Implement it.
Getting rid of one's beliefs is the basic tool for conducting a serious, because unbiased, analysis.
Getting rid of your fears is the basic tool for carrying out the implementation with determination, and very often also for having the courage to see the problem.

The voice of devotion (to love God, to love one's neighbour) is a way of setting an example.

Deepen

Consult the question during 'What is science for?'