I did but prompt the age to quit their clogs
By the known rules of ancient liberty,
When straight a barbarous noise environs me
Of owls and cuckoos, asses, apes and dogs:
As when those hinds that were transform'd to frogs
Rail'd at Latona's twin-born progeny
Which after held the sun and moon in fee.
But this is got by casting pearl to hogs,
That bawl for freedom in their senseless mood,
And still revolt when truth would set them free.
Licence they mean when they cry liberty;
This line alludes to Jesus' Sermon on the Mount in Matthew 7:6: 
 Do not give what is holy to the dogs; nor cast your pearls before swine, lest they trample them under their feet, and turn and tear you in pieces
Sonnet 12: I did but prompt the age to quit their clogs