This short entry from August 3, 1967, inspired by a reading of Plato's Protagoras, reflects on the dissemination and control of ideas within society. The author draws a parallel between ideas, opinions, and conceptual frameworks and human products or goods offered to others. He points out that just as commercial goods can be of high quality, inferior, or even harmful, the same applies to intellectual constructs. The core question posed is whether the nationalization or socialization of the production of ideas through public institutions truly guarantees their quality for the ordinary citizen. Within the context of the socialist society of the time, the author suggests an analogy with the civic inspection of food stores, asking whether a similar form of civic control should be established over the creation and spread of ideas. The text offers a critical reflection on the relationship between institutional power, the quality of intellectual content, and the public's right to supervise the processes that shape public opinion.