For 10 points, name this developer of the theory of the id, ego, and superego, the author of The Interpretation of Dreams.
This thinker discussed a line from Heine where a character says of Baron Rothschild, "He treated me quite as his equalÂ—quite famillionairely" in developing a division between tendentious and non-tendentious humor.  He discussed the difference between the death drive and libido in his Beyond the Pleasure Principle and later wrote a work which described the difference between manifest and latent content while analyzing "Irma's Injection" in relation to "wish fulfillment". For 10 points, name this developer of the theory of the id, ego, and superego, the author of The Interpretation of Dreams.
This thinker discussed a line from Heine where a character says of Baron Rothschild, "He treated me quite as his equalÂ—quite famillionairely" in developing a division between tendentious and non-tendentious humor.  
Sigmund Freud