All the different branches of Indian philosophy are indebted to the Samkhya system for its in-depth analysis. This is the authoritative text on Samkhya. Sanskrit Text, word by word meaning, and commentary.
If a piece of burning charcoal be placed on a man's head, see how he struggles to throw it off. Similar will be the struggle for freedom of those who really understand that they are slaves of nature.
-Swami Vivekananda