Knowledge and Human Interests by Jurgen Habermas (Professor of Philosophy Emeritus at the Johann Wolfgang Goethe University in Frankfurt)
In this extraordinarily wide-ranging book, Habermas examines the principal positions of modern philosophy - Kantianism, Marxism, positivism, pragmatism, hermeneutics, the philosophy of science, linguistic philosophy and phenomenology - to lay bare the structure of the processes of enquiry that determine the meaning and the validity of all our statements which claim objectivity.
This edition contains a postscript written by Habermas for the second German edition of Knowledge and Human Interests.