In which a stranger from Elea joins Socrates and Theaetetus in a spirited dialectic to unmask the nature of the sophist, first by tracing his art through analogies of hunting and exchange, and then by examining the intricate purifications and disputations of the soul and intellect. Throughout their patient inquiry, they reveal the sophist's many guises and the subtle illusions by which he beguiles the young and the wealthy, setting the stage for a deeper understanding of imitation, knowledge, and deception.

In which the nature of the one is examined through its seeming contradictions of age, unity, and multiplicity, revealing a continuous process of becoming that entwines being and non-being in a curious interplay. And in this contemplation, the relationship between the one and the many unfolds, contemplating the conditions under which the one either is or is not, and the profound implications this holds for the existence and perception of all things.

In which the nature of the one is examined through rigorous dialectic, revealing its paradoxical qualities of sameness and otherness, unity and multiplicity, rest and motion, existence and non-existence; and reflections on its relation to being, time, number, and the whole unfold with subtle complexity. Thus, the discourse gently probes how the one may simultaneously elude and embody fundamental attributes, inviting contemplation on the very essence of reality and being.

In which a gathering at Athens recalls a profound dialogue exploring the nature of unity and plurality, where Socrates, Parmenides, and Zeno engage in earnest examination of ideas, their participation, and the challenges inherent in grasping absolute forms. The discourse unfolds with a rigorous inquiry into the one’s indivisibility, its relation to motion and likeness, and the arduous philosophical exercise required to discern truth through the consequences of both affirmation and denial.

In which Socrates and I explore the elusive nature of knowledge, examining whether to possess knowledge is to truly have it, and unravel the tangled relationship between true opinion, rational explanation, and understanding. Through metaphor and dialectic, we probe the definitions and the distinctions that escape us, concluding with a sober humility about the limits of human wisdom.

In which Socrates and Theaetetus engage in a careful and delicate inquiry into the nature of knowledge, distinguishing perception from true understanding through a thoughtful examination of how the mind processes impressions and forms opinions. Their discourse delicately navigates the puzzles of true and false belief, memory, and the soul’s interplay with sensations, seeking to clarify what it means truly to know.

In which Socrates engages Theodorus in a spirited discourse on the nature of truth, questioning the idea that man is the measure of all things and exploring the complexities of knowledge, perception, and the flux of all things. Along the way, he contrasts the dispositions of philosophers and lawyers, and prepares to examine competing doctrines of motion and rest as espoused by ancient thinkers.

In which the nature of perception and knowledge is meticulously examined through lively dialogue, revealing the complexities of how our senses interact with the world and the challenges of distinguishing truth from illusion. Together, we explore the idea that reality and opinion may be intertwined, leading to a thoughtful consideration of Protagoras’ doctrine that "man is the measure of all things," as well as the difficulties such a view presents to philosophy and common understanding.

In which a group of acquaintances recount the near-fatal hardships endured by young Theaetetus and assemble to listen to a carefully preserved dialogue spotlighting his intellectual promise. The conversation that unfolds between Socrates, Theodorus, and Theaetetus gently embarks upon the perplexing quest to define knowledge, likening the soul’s labours to a midwife’s delicate art of giving birth to truth.

In which the immortal nature of the soul is explored through analogy and reason, revealing its imperishable purity beyond earthly corruption, and a vivid vision of the afterlife is recounted where souls face just recompense and choose their destinies under the watchful governance of cosmic necessity. The discourse culminates in a solemn exhortation to pursue justice and virtue with steadfastness, assuring that such a life brings true happiness and honour both now and beyond.