Yes.
A person's thoughts can be read by looking into his/ her eyes.
Cicero is quoted as saying, 'Ut imago est animi voltus sic indices oculi' (The face is a picture of the mind as the eyes are its interpreter).
There is Latin proverb, 'The face is the index of the mind.'
The French says, (The eyes are the mirror of the soul).
Its variant form is" the eyes are the windows of the soul".