"Some people think they can explain rationally, by thought, what they think. But that is extremely relative. Psychoanalysis is a dangerous disease, it puts to sleep the antiobjective impulses of men and systematizes the bourgeoisie. There is no ultimate Truth. The dialectic is an amusing mechanism which guides us / in a banal kind of way / to the opinions we had in the first place. Does anyone think that, by a minute refinement of logic, he has demonstrated the truth and established the correctness of these opinions? Logic imprisoned by the senses is an organic disease. To this element philosophers always like to add: the power of observation. But actually this magnificent quality of the mind is the proof of its impotence. We observe, we regard from one or more points of view, we choose them among the millions that exist. Experience is also a product of chance and individual faculties. Science disgusts me as soon as it becomes a speculative system, loses its character of utility – that is so useless but is at least individual. I detest greasy objectivity, and harmony, the science that finds everything in order. Carry on, my children, humanity . . . Science says we are the servants of nature: everything is in order, make love and bash your brains in. Carry on, my children, humanity, kind bourgeois and journalist virgins . . . I am against systems, the most acceptable system is on principle to have none. To complete oneself, to perfect oneself in one's own littleness, to fill the vessel with one's individuality, to have the courage to fight for and against thought, the mystery of bread, the sudden burst of an infernal propeller into economic lilies...."
(Tristan Tzara, "Dada Manifesto" – 1918. Trans. Ralph Manheim)