Hinduism

Tukaram, Poem 3525

The mind knows its own welfare; it recognizes
the correct thing to do. Concealment of
aims is hypocrisy; it is truthfulness that effects
them. Base metal cannot pass the test; it melts
in the fire. Tuka says, Make and keep a genuine
article; it will serve you well in time to come.

Source The Poems of Tukârâma, trad. J. Nelson Fraser et K. B. Marathe, 3 vol., 1909-1915, archive.org · Contents