Man and Society Studies Collection

Ren Descartes is one the great philosophers and scientists whose thoughts and works influenced the development of the modern philosophy. He is also known for his Cartesian coordinate system in Mathematics. He was, in the full sense of the word, a partaker of the modern spirit and the first of the modern school of mathematicians. What is the influence of his work on the scientific thoughts up to nowadays? This is the story of Ren Descartes, the founder of the modern philosophy, the father of the method of reasoning.

For a long period of years, a child who was born deaf or blind has been called a defective. The belief that the deaf and blind could not be educated was so universal that within the last century they were actually referred to as children of "silence," "solitude" and "darkness," "sorrow-stricken children of silence", the pitiable object of dismal despair." How has it evolved? This book deals with the history of the sign language and the evolution of the education of deaf-mute.