First and Last Things by H.G. Wells — Read

I cannot divide them into clearly defined classes, but I may perhaps begin with those that bring one into the widest sympathy with living things and go on to those one shares only with highly intelligent and complex human beings.

There come first the desires one shares with those more limited souls the beasts, just as much as one does with one's fellow man. These are the bodily appetites and the crude emotions of fear and resentment. These first clamour for attention and must be assuaged or controlled before the other sets come into play.