“All this, I said, just as today was the case with the beginnings of wireless, would be of no more service to man than as an escape from himself and his true aims, and a means of surrounding himself with an ever closer mesh of distractions and useless activities.”

Source: Demian (1919), p. 134

From Critique of Everyday Life: Volume 1 (1947/1991)
Context: It is through knowledge that the proletarian liberates himself and begins actively superseding his condition. Moreover in this effort to attain knowledge and awareness, he is forced to assimilate complex theories (economic, social, political...), i. e. to integrate the loftiest findings of science and culture into his own consciousness.
On the other hand the petty bourgeois and bourgeois, as such, are barred access to the human.
For them to become humanized, they must break with themselves, reject themselves, an endeavor which on an individual level is frequently real and pathetic … We should understand men in a human way, even if they are incomplete; conditions are not confined within precise, geometrically defined boundaries, but are the result of a multitude of obstinate and ever-repeated (everyday) causes. Attempts to escape from the bourgeois condition are not particularly rare; on the other hand, the failure of such attempts are virtually inevitable, precisely because it is not so much a question of suppression but of a complete break. (Among intellectuals, this notion of super session is frequently false and harmful; when they supersede themselves as petty-bourgeois or bourgeois intellectuals, they are often merely continuing in the same direction and following their own inclinations in the belief that they are 'superseding themselves'. So far from gaining a new consciousness, they are merely making the old one worse. There is nothing more unbearable than the intellectual who believes himself to be free and human, while in every action, gesture, word and thought he shows that he has never stepped beyond bourgeois consciousness.)

"On Invisibility" in Diary of an Unknown (1953)

Einen Menschen verstehen heißt also: auch er sein. Der geniale Mensch aber offenbarte sich an jenen Beispielen eben als der Mensch, welcher ungleich mehr Wesen versteht als der mittelmäßige. Goethe soll von sich gesagt haben, es gebe kein Laster und kein Verbrechen, zu dem er nicht die Anlage in sich verspürt, das er nicht in irgend einem Zeitpunkte seines Lebens vollauf verstanden habe. Der geniale Mensch ist also komplizierter, zusammengesetzter, reicher; und ein Mensch ist um so genialer zu nennen, je mehr Menschen er in sich vereinigt, und zwar, wie hinzugefügt werden muß, je lebendiger, mit je größerer Intensität er die anderen Menschen in sich hat.
Source: Sex and Character (1903), p. 106.

Source: Meditations

"Democracy" (1861)

Un Art de Vivre (The Art of Living) (1939), The Art of Thinking

1990s, Schafer interview (1995)

Space (1912)
Context: Remember his mind and no other part of him lived in his new world. He said it gave him an odd sense of detachment to sit in a room among people, and to know that nothing there but himself had any relation at all to the infinite strange world of Space that flowed around them. He would listen, he said, to a great man talking, with one eye on the cat on the rug, thinking to himself how much more the cat knew than the man.