He's talking about how historical events get dramatised. The "lofty scene", the historical event they are witnessing, will be "acted over", portrayed as part of a play "many ages hence", or a long time from now. The play will be performed in a country that didn't exist when the historical events took place, and in a language that didn't exist either.
The irony is that the line itself comes as part of a play portraying the historical event many ages after it happened, and performed in a country and a language that did not exist when the events took place.
There is an even deeper irony if you see this line delivered in a performance in the USA, a state unborn when Shakespeare wrote this line and in an accent (although not in a language) unknown to him.
Over
He is one of the commanders but raised in position by othello as liutenant.
There has been pop culture since the beginning of time. There was a pop culture in Shakespeare's day just like there is now. But the thing about pop culture is this: Everybody knows about it at the time, and everybody forgets about it immediately afterward. Shakespeare did affect the pop culture of his day. Hence Greene's pamphlet about the "upstart crow". Hence the joke that was going around about Shakespeare sleeping with the woman who was in love with Burbage because of his portrayal of Richard III. (This is a real joke found in someone's diary, the punchline of which was "William the Conqueror came before Richard III.")
"Take thy face hence." (Macbeth, V, iii)
Everyone is sad because of Tybalt's death so a happy occasion is needed. Hence, the wedding! Everyone is sad because of Tybalt's death so a happy occasion is needed. Hence, the wedding!
Cassius in the play Julius Caesar
The quote is from William Shakespeare's Julius Caesar Act 3 Scene I in which the character Cassius says to Brutus 'Stoop, then, and wash. How many ages hence shall this our lofty scene be acted over in states unborn and accents yet unknown!'
Liverpool, hence the scouse accents.
Over
Because during his time many elements were unknown. Hence the gap for the unknown elements.
The Articles of Confederation was drafted and hence acted as a central government until the end of the revolutionary war.
The beginning of Hinduism is unknown. It doesn't have any founder. Hence, the question does not exist.
It is just for human convenience. If the person who uses the physical balance is left handed then placing the unknown mass in the right pan will be the most convenient for him. So easyness to place the weights on the pan is considered. Hence the usual procedure.
Supercalifragilisticexpialidocious is used in Mary Poppins and the meaning is unknown however some intepret as being amazing and undescrible amongst words hence the long name.
God's son, Jesus, is said to be born on the 25th of December. Hence why it is called Christmas. But it has also been said that he wasn't actually born on this day. So his real birth date is unknown.
Oedipus (pronounced Edipus) Plot summary- a boy is cast away from his royal family at a young age, grows up without them, then returns and conquers the kingdom, killing his unknown father and marrying his unknown mother. Hence Hercules says "And I thought my family had problems"
the equations of motion are v=u+at where u and v are the initial and final velocity a is the acceleration and t is the time taken but a=f/m where f is the force given and m is the mass of the body so the value for force changes when a force is applied or withdrawn therefore the net value of the motion is altered and hence affects the motion of the object A2. The object's acceleration is changed when acted on by a force.