Max Stirner. The only one and his property (№ 365428)

... they are more willing to assume as they should be, require from each the same pursuit of your "I" and "strive to make all equally equal, equally worthy of respect and equally moral or rational men."
Yes, if people were what they should be, can be, if all men were reasonable, all would love each other like brothers, then would come a heavenly habitation. Suppose it come, that people are what they should be, can be! And what would they be? Also not more than they can, that is what they are able, have the power to be. And are they really, for what they themselves can not imagine, so they are not able to be: to be able means to be really. If we state something to be fact because we are in reality. Can see blinded from cataracts? Oh Yes, if he successfully removed cataracts. But he cannot see because he does not see. Possibility and reality always coincide. You cannot do what you do not do as well as don't do what can't do.