Brion Gysin talking to Tristan Tzara: 'Every time we met, Tzara would whine, "Would you be kind enough to tell me just why your young friends insist on going back over the ground we covered in 1920?" What could I say, except, "Perhaps they feel you did not cover it thoroughly enough."' (found in http://whitneyannetrettien.com/thesis/)
@aparrish that reminds me a little bit of this Eggers quote I like to think about sometimes:
We care about doing what we want to do creatively. We want to be interested in it. We want it to challenge us. We want it to be difficult. We want to reinvent the stupid thing every time.