The scars of others should teach us caution.

Never look a gift horse in the mouth. [Lat., Noli equi dentes inspicere donati.]

The face is the mirror of the mind, and eyes without speaking confess the secrets of the heart.

Never look a gift horse in the mouth.

The line, often adopted by strong men in controversy, of justifying the means by the end.

When the stomach is full, it is easy to talk of fasting.