He that is neither one thing nor the other has no friends.
Do not count your chickens before they are hatched.
The cat always leaves a mark on his friend.
If these town gods can't detect the thieves who steal from their own temples, it's hardly likely they'll tell me who stole my spade.
Beware lest you lose the substance by grasping at the shadow.
A doubtful friend is worse than a certain enemy. Let a man be one thing or the other, and we then know how to meet him.