Keep your words sweet – you may have to eat them sometime.
There is one very similar subhashita in Sanskrit, which always been my favorite.
प्रियवाक्यप्रदानेन सर्वे तुश्यंति जंतवः | तस्मात्तदेव वक्तव्यं वचने का दरीद्रता ||
(To read: priyavAkyapradAnEna sarvE tushanti jantavah tasmattadEva vaktavyam vachanE ka darIdratA )
All living creatures love listening to you, if you talk sweet. So why poverty of sweet words ?
The Bach 
googled it :
प्रिय-वाक्य-प्रदानेन – प्रिय = loving (pleasant), वाक्य = sentence (words), प्रदान = giving, प्रदानॆन = by giving (3rd case – instrumental, singular); priya-vAkya-pradAnena = By giving pleasant words
सर्वे = all (nominative case, plural of the pronoun सर्व)
तुष्यन्ति = are pleased (present tense, third person, plural of root verb तुष्)
जन्तवः = living beings (nominative case, plural of जन्तु)
तस्मात् = therefore
तत् = it
एव = only
वक्तव्यं = must be said
वचने = in speaking (locative (7th) case of वचन)
का = what
दरिद्रता = poverty (lack)
अन्वय –
सर्वे जन्तवः प्रियवाक्यप्रदानेन तुष्यन्ति । तस्मात् तत् एव वक्तव्यं । वचने का दरिद्रता?
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golden words
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@kaushik
That’s great. How come I am poor in googling Sanskrit words and you do it so easily ?
@pegause
Thank you
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Emmm… I don’t really understand it, but I agreed on “Talk Sweet” & “Sweet Words”… Yes, talk with sweet words will be welcome by everyone in this world…!
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@DSvT
Yes thats an old language and never used for conversation. And you got the meaning right .
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Its a spoken language even today also
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If one is soft spoken , it pleases everyone. We should speak with others in a pleasant manner . Here, the word Jantavah word refers Human beings . Then why should one act like a poor person and act miserly in speaking softly with others.
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With a smiling face we should always speak in a pleasant manner , this is a good way to convey good things and do favor for others .
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