Nothing in King Lear; Act I, Scene I.

KING LEAR
Speak.

CORDELIA
Nothing, my lord.

KING LEAR
Nothing!

CORDELIA
Nothing.

KING LEAR
Nothing will come of nothing: speak again.

Scene IV:

KING LEAR
An you lie, sirrah, we'll have you whipped.

Fool
I marvel what kin thou and thy daughters are:
they'll have me whipped for speaking true, thou'lt
have me whipped for lying; and sometimes I am
whipped for holding my peace. I had rather be any
kind o' thing than a fool: and yet I would not be
thee, nuncle; thou hast pared thy wit o' both sides,
and left nothing i' the middle: here comes one o'
the parings.

Enter GONERIL

KING LEAR
How now, daughter! what makes that frontlet on?
Methinks you are too much of late i' the frown.

Fool
Thou wast a pretty fellow when thou hadst no need to
care for her frowning; now thou art an O without a
figure: I am better than thou art now; I am a fool,
thou art nothing.

Via 'Nothing' in Shakespeare. Hat tip to Anne Carson for indicating Cordelia's nothing [P. 118].  ¶ 9:35 PM