This historical work has been digitally restored using the latest technology, making it available in digital and printed form. The original is painstakingly manually quality-checked, leaving fresh, easy-to-read literature in modern fonts whilst keeping the author's intent in place wherever possible. This also enables Kindle versions to use the technology available such as Text-to-Speech, as our books are not simply printed scans.

Excerpt from the book:

"We have now learned to recognise the emotions, dispositions, and volitional processes as psychical contents, all of which differ from each other in their characteristic processes. None of them, however, contain anywhere specific elements. They can all of them be analysed into the same forms of feelings. Although the volitional process in especial is very peculiar, yet this peculiarity nowhere depends upon specific ideational or affective elements, but solely upon the mode of combination of these elements into emotions with their end stages again composed merely of general affective forms. Still there remains another question to be answered, which has not yet been settled by the reduction of all feelings to the above-mentioned six principal forms, viz. pleasure, displeasure, strain, relaxation, excitation, and quiescence. Is each of these forms perfectly uniform?"