The Technique of Travel : Page 152
High-angle climbing.—This, in itself, is the subject of later chapters. The novice not wishing to pursue the subject further should remember at least three rules:
Select the easiest, safest route; plan and remember how to use it.
Maintain an adequate margin of safety; don't relyupon a single hold, but use two or three at a time.
Make the legs and feet do most of the work; legmuscles are far stronger than arm muscles, and a one-inch hold will support a foot; arms and hands shouldbe saved for balance and emergencies.