Nobody really thinks who does ...

Nobody really thinks who does not abstract from that which is given, who does not relate the facts to the factors which have made them, who does not - in his mind - undo the facts. Abstractness is the very life of thought, the token of its authenticity.
 Herbert Marcuse

Quotes from the same author

The abbreviations (e.g. NATO, UN, USSR - E.W.) denote that and only that which is institutionalized in such a way that the transcending connotation is cut off. The meaning is fixed, doctored, loaded. Once it has become an official vocable, constantly repeated in general usage, "sanctioned" by the intellectuals, it has lost all cognitive value and serves merely for recognition of an unquestionable fact.
 Herbert Marcuse
Obscenity is a moral concept in the verbal arsenal of the establishment, which abuses the term by applying it, not to expressions of its own morality but to those of another.
 Herbert Marcuse
Free election of masters does not abolish the masters or the slaves.
 Herbert Marcuse
Free election of masters does not abolish the masters or the slaves. Free choice among a wide variety of goods and services does not signify freedom if these goods and services sustain social controls over a life of toil and fear – that is, if they sustain alienation. And the spontaneous reproduction of superimposed needs by the individual does not establish autonomy; it only testifies to the efficacy of the controls.
 Herbert Marcuse
The criterion for free choice can never be an absolute one, but neither is it entirely relative.
 Herbert Marcuse