I had an Einstein poster in my classroom. My students referred to him as my dad, because I told a student, who did recognize him, he was my dad. When another student questioned me, I pointed out we had wild hair, facial foliage, and eccentric behaviors.
I enjoy Einstein, because his quotes reveal important insights. In this one, peace is something we offer and gain through mutual understanding.
I am using Jurgen Habermas, Hans-Georg Gadamer, Parker Palmer, etc. in my dissertation. I find important intersections in their work as they stress conversation, communication, and mutual understanding as integral to living peacefully in the world. It does not mean agreement, but suggests we can accept different ways of experiencing the world that allows for non-violent disagreement. We see what the Other holds true in their living as not very different from what we hold true.