The heart
leb (labe)
the heart; also used (figuratively) very widely for the feelings, the will and even the intellect
of the wise
chakam (khaw-kawm')
wise, (i.e. intelligent, skilful or artful) -- cunning (man), subtil, (un-), wise(hearted), man).
teacheth
sakal (saw-kal')
to be (causatively, make or act) circumspect and hence, intelligent
his mouth
peh (peh)
the mouth (as the means of blowing), whether literal or figurative (particularly speech); specifically edge, portion or side; adverbially (with preposition) according to
and addeth
yacaph (yaw-saf')
to add or augment (often adverbial, to continue to do a thing)
learning
leqach (leh'-kakh)
doctrine, learning, fair speech.
to his lips
saphah (saw-faw')
the lip (as a natural boundary); by implication, language; by analogy, a margin (of a vessel, water, cloth, etc.)