Mahabharata is usually attributed to the poet Vyasa. Mahabharata is nearly 3.000 years old and in size, it is more than ten times larger than the Iliad and the Odyssey combined. If you are looking for the Bhagavad Gita, which is a part of the Mahabharata.
Quotes from the Mahabharata
“Revenge is not always better,
but neither is forgiveness;
learn to know them both,
so that there is no problem.”
– Mahabharata
“The intoxication with power is worse than
drunkenness with liquor and such,
for who is drunk with power does not
come to his senses before he falls.”
– Mahabharata