EditorsG++ introduction Part I Philosophy of Mathematics 1 Infinite regress and foundations of mathematics 2 A renaissance of empiricism in the recent philosophy of mathematics? 3 Cauchy and the continuum: the significance of non-standard analysis for the history and philosophy of mathematics 4 What does a mathematical proof prove? 5 The method of analysis-synthesis Part II Critical Papers 6 The problem of appraising scientific theories: three approaches 7 Necessity, Kineale and Popper 8 Changes in the problem of inductive logic 9 On Popperian historiography 10 Anomalies versus G++crucial experimentsG++ 11 Understanding Toulmin Part III Science and Education 12 A letter to the director of the London School of Economics 13 The teaching of the history of science 14 The social responsibility of science References Lakatos bibliography Indexes.