The fat's all in the fire.

The fat's all in the fire.

To say that which is instructive and also pleasing.

To say that which is instructive and also pleasing.

By all that's good and glorious.

By all that's good and glorious.

Put himself upon his good behavior.

Put himself upon his good behavior.

With tooth and nail.

With tooth and nail.

As shines the moon amid the lesser fires.

As shines the moon amid the lesser fires.

As clear as a whistle.

As clear as a whistle.

A precious pair of brothers [i.e., rascals].

A precious pair of brothers [i.e., rascals].

Diamonds cut diamonds.

Diamonds cut diamonds.