The individual who proposes to occupy himself with any one of these arts must first master the foundation of knowledge, of formal traditions, and of manual practice upon which the superstructure is based.

The danger that a part of this fund of technical knowledge and practice may at any particular time be superannuated must be admitted; but the validity of the general rule is not affected thereby.

The most useful and effective dissenters are those who were in the beginning children of the Faith.

The individual who is too weak to assert himself with the help of an established technical tradition is assuredly too weak to assert himself without it.

The authoritative technical tradition associated with any one of the arts of civilization is merely the net result of the accumulated experience of mankind in a given region.