This book concerns with some philosophical issues and debates have been running among both philosophers and historians of science. This book focuses on some philosophical issues raised by philosophers and historians of science. Believing that philosophy of science is a critical ¿analytical approach deals with different disciplines of knowledge, our aim, accordingly, is to deal with some scientific disciplines and to show the relationship between the logic on which science is based from one side and other disciplines in social sciences. This understanding leads us to claim the possibility of epistemological unity between what is exact and natural and what is social and humanistic.

Dr Mohamed Sayed Hassan is an Assistant Professor of History and Philosophy of Science. He got his BA from Ain Shams Univ, Egypt, MA from Leeds Univ, Division of History and Philosophy of Science,UK and PhD Durham Univ,UK.His main concern is to study logical foundations of exact and humanistic sciences including Maths,Psychology and Sociology.