Contents: Preface. Part I: On Learning and Language. F. Marton, U. Runesson, A.B.M. Tsui, The Space of Learning. Part II: On Learning. P.Y. Ko, F. Marton, Variation and the Secret of the Virtuoso. U. Runesson, I.A.C. Mok, Discernment and the Question "What Can Be Learned?" P.P.M. Chik, M.L. Lo, Simultaneity and the Enacted Object of Learning. Part III: On Language. A.B.M. Tsui, F. Marton, I.A.C. Mok, D.F.P. Ng, Questions and the Space of Learning. A.B.M. Tsui, The Semantic Enrichment of the Space of Learning. A.B.M. Tsui, The Shared Space of Learning. Part IV: On Improving Learning. M.L. Lo, F. Marton, M.F. Pang, W.Y. Pong, Toward a Pedagogy of Learning. Epilogue.