We should look to the mind, and not to the outward appearance.

If you are a friend, why do you bite me so hard? If an enemy, why do you fawn on me?

There can be little liking where there is no likeness.

Others may try to feed our ego, but it is up to us to constrain it.

Don't kill the goose that lays the golden egg.

Faithful are the wounds of a friend; but the kisses of an enemy are deceitful.

Those who enter through the back door can expect to be shown out through the window