Undoubted from this Bible quote (Jeremiah 5:21-23):

²¹‘Hear this now, O foolish people,
Without understanding,
Who have eyes and see not,
And who have ears and hear not:
²² Do you not fear Me?’ says the Lord.
‘Will you not tremble at My presence,
Who have placed the sand as the bound of the sea,
By a perpetual decree, that it cannot pass beyond it?
And though its waves toss to and fro,
Yet they cannot prevail;
Though they roar, yet they cannot pass over it.
²³ But this people has a defiant and rebellious heart;
They have revolted and departed.

As for the third monkey, well …

Unfortunately they still speak.