http://info.sjc.ox.ac.uk/scr/hacker/docs/TheDevelopmentOfWittgensteinsPhilosophyOfPsychology.pdf
http://info.sjc.ox.ac.uk/scr/hacker/docs/Philosophy%20for%20RIP.pdf
http://info.sjc.ox.ac.uk/scr/hacker/docs/Relevance%20of%20W's%20phil.%20of%20psychol.%20to%20science.pdf
http://info.sjc.ox.ac.uk/scr/hacker/docs/Emotions%20-%20conceptual%20framework.pdf (Damasio's theory of emotions)
