Which, like the toad, ugly and venomous,
Wears yet a precious jewel in his head.
As You Like It -- II. 1.
That, Sir, which serves and seeks for gain,
And follows but for form,
Will pack, when it begins to rain,
And leave thee in the storm.
King Lear -- II. 4.
Ah! when the means are gone, that buy this praise,
The breath is gone whereof this praise is made: