Second Thoughts is a collection of papers on Schizophrenia, Linking
and Thinking, and is a commentary upon them in the light of later work.
Originally composed between 1950 and 1962, it derives its title from the
lengthy critical commentary which Bion attached to these case histories
in the year of publication, 1967, and represents the evolutionary change
of position marked in his three previous books and brought to further
refinement in the present work.