I KNOW that nothing i know / i know that i do not know anything ...  

to understand this highly philosophical " i know ... " the four logical alternatives can be derived from it as i had thought of it ...
It is said that 95% of the population do not comprehend the irony it is not a biting comment, no doubts, anyone can utter but something characteristic in quality different ...
The (Socratic) IRONY is a knowledge and intelligence of it what i know, it is not that you "do not know" ... a ... Ariston of "Athens" realized that any man he had discussed a topic with had a limited higher knowledge outside of what any of them represented and thus from it came his famous any (of his) dialogue concluding (originally) 'i know that nothing i know !' ... b ... if one does not know everything which is impossible to know his /her to know is near to nothing only Sun /God knows everything save the END / WHAT WILL HAPPEN this is unknown to anyone also to GOD since such a knowledge is given also by accident and WE know The SUN /God eternally remembers, knows ... c ... while we read e.g., the ancient PHILOSOPHIES we actually do not know anything of the men who wrote them we finally know something of it not that many really existed since only a few of them existed, the exact number cannot be stated in The Holy Bible / Qur'an what they thought of the then and partially also of our WORLD reality apart from the religious authors is included with a corresponding to it irony ... d ... true philosophers are the men who know, it is not very practical but a guiding highly to a better quality of thinking and thus to know knowledge, this is logical ... 

The Socrates ...
of those distant democratic times head of the state title in The True Ancient Athens its location we can exactly determine ... the first philosopher was PROTAGORAS (- 5th c. AD) while e.g., Pythagoras, Archimedes did not exist - a later accumulations etc ... the Latin script not so yet of a few associated with both (?) Language appears to be slightly older than Greek one (? +/- 25 y.,) and its creation was narrowly connected with The Holy Qur'an initial lines and was used in northern part of The Ancient Scythia Proper while later mentioned in its southern part ... THE CIRCLE introduced since all the stars we can observe not every night of the past for example ERATOSTHENES and at present MYSELF / 'ANYONE' who deserves that ACT OF TO BE HERE AGAIN are included in it is +/- 27K km x 1(m) across and at certain moment in any direction from its center situated at ... equally distant from +/- 3.65K in number are any of the system extremities ...

(?)
IAMBLICHUS (?) (... - 66 AD)  
ARISTON - the Socrates  /I. (66 - 98 AD)  
GLAUCON - the Socrates  /II. (98 - 113 AD)
CHARMIDES - the Socrates  /III. (113 - 157 AD)
THEATETUS - the Socrates  /IV. (157 - 210 AD)  -  etc ...