Can you summarize this text below:
In the same winter the Athenians gave a funeral at the public cost to those who had first fallen in this war. It was a custom of their ancestors, and the manner of it is as follows. Three days before the ceremony, the bones of the dead are laid out in a tent which has been erected; and their friends bring to their relatives such offerings as they please. In the funeral procession cypress coffins are borne in cars, one for each tribe; the bones of the deceased being placed in the coffin of their tribe. Among these is carried one empty bier decked for the missing, that is, for those whose bodies could not be recovered. Any citizen or stranger who pleases, joins in the procession: and the female relatives are there to wail at the burial. The dead are laid in the public sepulchre in the Beautiful suburb of the city, in which those who fall in war are always buried; with the exception of those slain at Marathon, who for their singular and extraordinary valour were interred on the spot where they fell. After the bodies have been laid in the earth, a man chosen by the state, of approved wisdom and eminent reputation, pronounces over them an appropriate panegyric; after which all retire. Such is the manner of the burying; and throughout the whole of the war, whenever the occasion arose, the established custom was observed. Meanwhile these were the first that had fallen, and Pericles, son of Xanthippus, was chosen to pronounce their eulogium. When the proper time arrived, he advanced from the sepulchre to an elevated platform in order to be heard by as many of the crowd as possible, and spoke as follows:
"Most of my predecessors in this place have commended him who made this speech part of the law, telling us that it is well that it should be delivered at the burial of those who fall in battle. For myself, I should have thought that the worth which had displayed itself in deeds would be sufficiently rewarded by honours also shown by deeds; such as you now see in this funeral prepared at the people's cost. And I could have wished that the reputations of many brave men were not to be imperilled in the mouth of a single individual, to stand or fall according as he spoke well or ill. For it is hard to speak properly upon a subject where it is even difficult to convince your hearers that you are speaking the truth. On the one hand, the friend who is familiar with every fact of the story may think that some point has not been set forth with that fullness which he wishes and knows it to deserve; on the other, he who is a stranger to the matter may be led by envy to suspect exaggeration if he hears anything above his own nature. For men can endure to hear others praised only so long as they can severally persuade themselves of their own ability to equal the actions recounted: when this point is passed, envy comes in and with it incredulity. However, since our ancestors have stamped this custom with their approval, it becomes my duty to obey the law and to try to satisfy your several wishes and opinions as best I may.