"The emancipation of man from his state of self-imposed immaturity"?

The “state of self-imposed immaturity,” which Kant deplored and hoped the Enlightenment would cure, has in reality merely been transformed into a new and different, but no less deplorable, form. The bourgeois functionary must absolutely prohibit himself from cultivating any form of sensibility other than a reverence for efficiency. He must deliberately impose upon himself a state of immaturity, particularly in the realm of understanding and refining his passions. This is precisely what allows him to substitute his employer’s and customer’s passions for his own, and thus be effective in his occupation. It is hardly an accident that engineers—who are, simultaneously, among the most highly refined bourgeois functionaries, and among the most highly refined products of the Enlightenment—retain the social and emotional maturity of children throughout their lives.

Schopenhauer on boredom

"The inner vacuity and emptiness we see stamped on innumerable faces is a consequence of mental dullness. It betrays itself in a constant and lively attention to all events in the external world, even the most trivial. This vacuity is the real source of boredom. It always craves external excitement to set the mind and spirits in motion. In regard to the sources of excitement it is not at all fastidious, as testified by the miserable and wretched pastimes to which people have recourse. ... The principal result of this inner vacuity is the craze for society, diversion, amusement, and luxury of every kind which lead many to extravagance and so to misery. Nothing protects us so surely from this wrong turning as inner wealth, the wealth of the mind, for the more eminent it becomes, the less room does it leave for boredom. The inexhaustible activity of ideas, their constantly renewed play with the manifold phenomena of the inner and outer worlds, the power and urge always to make different combinations of them, all these put the eminent mind, apart from moments of relaxation, quite beyond the reach of boredom."—Schopenhauer