George Santayana,
Reason in Common Sense
(1920, 1905)
“ In this case we may distinguish two stages or degrees in the transposition: first, before we think of our own pulling, we say the object itself pulls; in the first transposition we say it pulls against us, its pull is the counterpart or rival of ours but it is still conceived in the same direct terms of effort; and in the second transposition this intermittent effort is made potential or slumbering in what we call strength or force. ”
