“One word
Frees us of all the weight and pain of life:
That word is love.”
Source: Oedipus at Colonus, Line 1616–18

Oedipus at Colonus is one of the three Theban plays of the Athenian tragedian Sophocles. It was written shortly before Sophocles's death in 406 BC and produced by his grandson at the Festival of Dionysus in 401 BC.
“One word
Frees us of all the weight and pain of life:
That word is love.”
Source: Oedipus at Colonus, Line 1616–18
“In a just cause the weak o'ercome the strong.”
Œdipus Coloneus, 880.
Bartlett's Familiar Quotations, 10th ed. (1919)