Iliad (Rapsodies 1 to 6)   

you will stand by me heartily in word and deed, for I know that I
shall offend one who rules the Argives with might, to whom all the
Achaeans are in subjection. A plain man cannot stand against the anger
of a king, who if he swallow his displeasure now, will yet nurse
revenge till he has wreaked it. Consider, therefore, whether or no you
will protect me."
And Achilles answered, "Fear not, but speak as it is borne in upon
you from heaven, for by Apollo, Calchas, to whom you pray, and whose
oracles you reveal to us, not a Danaan at our ships shall lay his hand
upon you, while I yet live to look upon the face of the earth- no, not
though you name Agamemnon himself, who is by far the foremost of the
Achaeans."
Thereon the seer spoke boldly. "The god," he said, "is angry neither
about vow nor hecatomb, but for his priest's sake, whom Agamemnon
has dishonoured, in that he would not free his daughter nor take a
ransom for her; therefore has he sent these evils upon us, and will
yet send others. He will not deliver the Danaans from this
pestilence till Agamemnon has restored the girl without fee or
ransom to her father, and has sent a holy hecatomb to Chryse. Thus
we may perhaps appease him."
With these words he sat down, and Agamemnon rose in anger. His heart
was black with rage, and his eyes flashed fire as he scowled on
Calchas and said, "Seer of evil, you never yet prophesied smooth
things concerning me, but have ever loved to foretell that which was
evil. You have brought me neither comfort nor performance; and now you
come seeing among Danaans, and saying that Apollo has plagued us
because I would not take a ransom for this girl, the daughter of
Chryses. I have set my heart on keeping her in my own house, for I
love her better even than my own wife Clytemnestra, whose peer she
is alike in form and feature, in understanding and accomplishments.
Still I will give her up if I must, for I would have the people
live, not die; but you must find me a prize instead, or I alone
among the Argives shall be without one. This is not well; for you
behold, all of you, that my prize is to go elsewhither."
And Achilles answered, "Most noble son of Atreus, covetous beyond
all mankind, how shall the Achaeans find you another prize? We have no
common store from which to take one. Those we took from the cities
have been awarded; we cannot disallow the awards that have been made
already. Give this girl, therefore, to the god, and if ever Jove
grants us to sack the city of Troy we will requite you three and
fourfold."
Then Agamemnon said, "Achilles, valiant though you be, you shall not
thus outwit me. You shall not overreach and you shall not persuade me.
Are you to keep your own prize, while I sit tamely under my loss and
give up the girl at your bidding? Let the Achaeans find me a prize
in fair exchange to my liking, or I will come and take your own, or
that of Ajax or of Ulysses; and he to whomsoever I may come shall
rue my coming. But of this we will take thought hereafter; for the
present, let us draw a ship into the sea, and find a crew for her
expressly; let us put a hecatomb on board, and let us send Chryseis
also; further, let some chief man among us be in command, either Ajax,
or Idomeneus, or yourself, son of Peleus, mighty warrior that you are,
that we may offer sacrifice and appease the the anger of the god."
Achilles scowled at him and answered, "You are steeped in
insolence and lust of gain. With what heart can any of the Achaeans do
your bidding, either on foray or in open fighting? I came not
warring here for any ill the Trojans had done me. I have no quarrel
with them. They have not raided my cattle nor my horses, nor cut
down my harvests on the rich plains of Phthia; for between me and them
there is a great space, both mountain and sounding sea. We have
followed you, Sir Insolence! for your pleasure, not ours- to gain
satisfaction from the Trojans for your shameless self and for
Menelaus. You forget this, and threaten to rob me of the prize for
which I have toiled, and which the sons of the Achaeans have given me.