Just as water reflects the face,
so one human heart reflects another.

The Bible (The Old Testament) (14th - 2nd C BC) Judeo-Christian sacred scripture [Tanakh, Hebrew Bible], incl. the Apocrypha (Deuterocanonicals)

Proverbs 27:19 [NRSV (2021 ed.)]
    (Source)

Alternate translations:

As in water face answereth to face, so the heart of man to man.
[KJV (1611)]

As no two faces are ever alike, unlike, too, are the hearts of men.
[JB (1966)]

A mirror reflects a man’s face, but what he is really like is shown by the kind of friends he chooses.
[TLB (1971)]

It is your own face that you see reflected in the water and it is your own self that you see in your heart.
[GNT (1976)]

As water reflects face back to face, so one human heart reflects another.
[NJB (1985)]

As water reflects the face,
so one’s life reflects the heart.
[NIV (2011 ed.)]

As water reflects the face,
so others reflect your heart back to you.
[NIV (2011 ed.), alternate]

As water reflects the face,
so the heart reflects one person to another.
[CEB (2011)]

As face answers to face in water,
So does one’s heart to another’s.
[RJPS (2023 ed.)]