Although the last not least.
Nothing will come of nothing.
I'll see before I doubt; when I doubt, prove; And on the proof, there is no more but this — Away at once with love or jealousy!
Every toy is the prologue to some great amiss.
Many a man's tongue shakes out his master's undoing.
Mad I call it, for to define true madness, what is't to be nothing else but mad?