The optimal heaviness of face seems to lie in a mean between the bold faces and such light faces as Scotch Roman and Cushing Monotone.
"The Booklover and His Books"
Harry Lyman Koopman
7. The quality and the texture of the paper is a much less significant factor than has been supposed, provided, of course, that the illumination and the inclination of the paper are such as to secure an optimal condition of light reflection from its surface.
"The Booklover and His Books"
Harry Lyman Koopman
The greatest happiness in life can be obtained only if all instincts, that of workmanship included, can be maintained at a certain optimal intensity.
"Manhood of Humanity."
Alfred Korzybski