I find this quote so simplistic yet pretty powerful at the same time. Everything has a history...literally everything. Anything from the past can be looked at by historians and something can be drawn from it. For example if we looked at the civil rights movements which is pretty relevant to todays BLM. There are extreme similarities.

This quote is totally one of the key thoughts and philosophy of History its self. 'Strangeness' has a really interesting connotation to it, when somethings strange or different often times I want to know more about it. Just to see if it really is as strange as I thought? Because what's strange to you or me might be the "normal' for someone else. So if we view History's past it may seem strange because we are looking through present perspective. But if we alter the way we think just a little bit you can understand way that was normal at the time and even maybe start seeing similarities of past and present.