John Davies 
Hindu Philosophy [PDF ebook] 
The Sankhya Karika of Iswara Krishna; An Exposition of the System of Kapila; With an Appendix on the Nyaya and Vaiseshika Systems

Whilst the greatest effort has been made to ensure the quality of this text, due to the historical nature of this content, in some rare cases there may be minor issues with legibility. I wish to present to my readers the philosophy of Kapila as it has been set forth by his Indian exponent, Iswara Krishna. The system of Kapila, called the Sankhya or Rationalistic, in its original form, and in its theistic development by Patanjali, contains nearly all that India has produced in the department of pure philosophy. Other systems, though classed as philosophic, are mainly devoted to logic and physical science, or to an exposition of the Vedas.