2.
You can fool me once, you can even fool me twice, you can even fool me thrice. But you can never fool me four
Melanie
3.
Thrice happy's the wooing that's not long adoing. So much time is saved in the billing and cooing.
Richard Harris Barham
5.
Once I guessed right, And I got credit by't; Thrice I guessed wrong, And I kept my credit on.
Robert Louis Stevenson
6.
Take heed of a person marked, and a Widdow thrice married.
[Take heed of a person marked, and a widow thrice married.]
George Herbert