This is a poignant statement of the bias of the human consciousness in seeing people opposite to themselves.
Explanation:
The statement employed here is saying that we allow for perspective to ourselves when we want to introspect within our selves about certain things but not when we tend to see other people.
We see ourselves as individuals only but when we have to see other people around us we find inside us biases we have against them and thus we fail to see them as individuals too like we like to see ourselves as.
