Abstract
The publication contains a study "Does that which thinks itself have to be complex?" (pp. 7-59), Czech translation of Plotinus' treatise "On the knowing hypostases and that which is beyond" (Enn. V,3), and notes to the Greek text a its interpretation.
The introduction analyses self-knowledge at all three levels as Plotinus considers them: discursive soul, Intellect and One. The most difficult question is the "intellect of soul", which does not prove to be just another name for the discursive soul, nor the hypostatic Intellect itself.
It seems to be a representation of Intellect in soul which enables the soul to ascend to the Intellect, i.e. to find itself as a part of it.