Henry M. Robert, Pocket Manual of Rules of Order for Deliberative Assemblies (1876)
“ A Quorum of an assembly is such a number as is competent to transact its business. Unless there is a special rule on the subject, the quorum of every assembly is a majority of all the members of the assembly. But whenever a society has a permanent existence it is usual to adopt a much smaller number, the quorum being often less than one-twentieth of its members; this becomes a necessity in most large societies, where only a small fraction of the members are ever present at a meeting. ”
