"Within the hierarchy of the little men there is no man who can outlittle the minor executive in a large corporation who treats his authority as he treats a tight suit. In a tight suit, he is afraid to make a move. With his authority the minor executive takes the same precaution. There are thousands of these negative men in the places where minor executives conceal themselves in the labyrinths of the big corporations. They use the clam philosophy. If a clam never sticks its head out it is never overtaken by trouble. "
-- TREADMILL TO OBLIVION by Fred Allen
Illustration of Allen by Al Hirschfeld, as if you couldn't tell.