33 keep in mind , however , that it is one thing for causes to be essentially ordered in causing or as regards causation and quite another for the things which are causes to be essentially ordered , as is clear from avicenna in the sixth book of the metaphysics , chapter five 33但是，要牢记一点，正如阿维森纳在《形而上学》第六部第五章所言，一件事物由于诸因而在因果关系中或者被看成因果性而被本质性地归类，与一件事物作为原因而被本质性地归类完全是两回事。
