The plan of this volume, together with the compass proposed for it, created the necessity of establishing from the outset certain limits to be very strictly observed.

本书的计划及其拟定范围，从一开始就要求确立若干必须严格遵守的界限。

The list of authors selected for representation must not include the names of any still living.

入选的作者名单不得包含任何仍在世者的名字。