"The number system is like human life, first you have the natural numbers, the ones that are whole and positive; the numbers of a small child. But human consciousness expands. The small child discovers longing. And do you know what the mathematical expression is for longing? The negative numbers; the formalisation of the feeling that you are missing something. And human consciousness expands and grows even more and the child discovers the in-between spaces; between stones, between pieces of moss on the stones, between people..." Peter HoegÂ