The more you want, the more you stand to lose

The smaller the mind the greater the conceit.

It is easy to despise what you cannot get

A crust eaten in peace is better than a banquet partaken in anxiety.

A wild boar was sharpening his tusks upon the trunk of a tree in the forest when a fox came by and asked, Why are you doing that, pray? The huntsmen are not out today and there are no other dangers at hand that I can see. True, my friend, replied the Boar, but the instant my life is in danger, I shall need to use my tusks. There will be no time to sharpen them then.

The cat always leaves a mark on his friend.

The strong and the weak cannot keep company.