Editorial preface to the fourth edition and modified translation -- The text of the Philosophische Untersuchungen -- Philosophische untersuchungen = Philosophical investigations -- Philosophie der psychologie, ein fragment = Philosophy of psychology, a fragment.

Tasos Kazepides; On Educational Aims, Curriculum Objectives and the Preparation of Teachers, Journal of Philosophy of Education, Volume 23, Issue 1, 30 May 2006.

Robin Barrow; The Concept of Curriculum Design, Journal of Philosophy of Education, Volume 20, Issue 1, 30 May 2006, Pages 73–80, https://doi.org/10.1111/j.1467.

A denounciation of present-day schooling with radical suggestions for reform.