A mote it is to trouble the mind's eye.
In the most high and palmy state of Rome,
A little ere the mightiest Julius fell,
The graves stood tenantless and the sheeted dead
Did squeak and gibber in the Roman streets:
As stars with trains of fire and dews of blood,
Disasters in the sun; and the moist star
Upon whose influence Neptune's empire stands
Was sick almost to doomsday with eclipse:
And even the like precurse of fierce events,
As harbingers preceding still the fates
And prologue to the omen coming on,
Have heaven and earth together demonstrated
Unto our climatures and countrymen.--
But soft, behold! lo, where it comes again!

This quote is made by Horatio in Hamlet by William Shakespeare. He was trying to understand the appearance of the ghost by comparing it to the stories that were told after Julius Ceaser's death.

Explanation:

This Is like a foreshadowing of what is to come. The quote was referring to the bad omens which were said after the death of Julius Ceaser and how his apparition roamed about which is similar to how the ghost appeared just after the death of king Hamlet. Horatio was trying to make meaning of the appearance of the ghost by comparing it with the stories that came about after the death of Julius Ceaser.

Horatio is hamlet's closest friend, He is very loyal and sensible. Horatio was told by everyone to talk to the ghost since he is very intelligent and a scholar, The guards all think the ghost has resemblance with the king of Denmark, they all talked about the mysterious apparition that has been appearing of late.

Horatio asks the ghost some questions after he reappeared which can be termed offensive, but the ghost left without answering. then Horatio made remark about the armor of the ghost which was the same Armour the late king wore when he fought in Norway.