Widespread economic prosperity typically reaches all citizens of a country or region. A country cannot benefit without all of its citizens somehow benefitting, in the same way that an incoming tide will lift all boats including both the behemoth cruise ships and the tiny canoes.

Occasionally, the adage also may be used when referring to entire groups benefitting from a change in circumstances, particularly an influx of resources that seemingly might reach only individuals. I have heard co-workers respond to their co-workers receiving large sales commissions by saying, "a rising tide lifts all boats," implying that the increase in business for the company will expand the total opportunities for the company (and thus all employees). In this use case, clearly it is understood that the "rising tide" does not lift all boats equally.

Critics of this proverb may dispute its veracity claiming the phrase is erroneously used to justify any type of deal or arrangement that seems to benefit the few, but typically the expression is used with optimism or as a form of mild celebration by leaders, or members of the group themselves.

The proverb is often attributed to John F. Kennedy after he used it in a 1963 speech disputing the claim that a dam construction project had too much pork (wasteful spending). Kennedy's speechwriter (Ted Sorensen) revealed that the New England Council originally used the phrase, which Kennedy borrowed regularly.

A similar phrase is "to grow the pie," which means to make the entire set of opportunities greater, presumably so that everyone can appreciate a larger piece of pie, even if their percentage of the pie does not change.

Do you share the sentiment that broad economic prosperity reaches all?

Je, umewahi kuona muda huenda pole pole wakati unasubiri? Lakini kwa upande mwingine, ukivutiwa na mambo mengine, m muda huenda haraka.

Kwa mfano, ukisubiri kumwona daktari, muda ni mfupi ukiangalia simu yako au kusoma gazeti, badala ya kungoja tu kusikia jina lako liitwe.

Chimbuko cha methali hii ni Benjamin Franklin kwa Poor Richard's Almanac, hata hivyo haionekani hapo. Badala yake, Franklin aliitumia katika insha juu ya 'sumaku ya wanyama' mwaka 1785. 

It’s a simple and profound truth about human relationships: Making a promise means creating an expectation in others. When we fail to keep our promises, we damage our relationships and our reputation. Next time you make a promise, ask yourself, "Would I sign a contract that said this?"

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What do you think? Is a promise as strong as a contract?

Once upon a time long ago, there was a beautiful, intelligent and kind young woman named Portia. Many men wanted to marry her and came to woo her. Portia’s father had died and left behind a will instructing that any suitor of Portia would have to choose among three caskets, one of gold, one of silver and one of lead. Only the suitor who chose correctly would be allowed to marry Portia and inherit all her father’s wealth. One day, the Prince of Morocco came to woo Portia.

by William Shakespeare
Act II, Scene 7

Portia: Go draw aside the curtains and discover
The several caskets to this noble prince.
Now make your choice.

Prince of Morocco: The first, of gold, who this inscription bears,

 The second, silver, which this promise carries,

 This third, dull lead, with warning all as blunt,

How shall I know if I do choose the right?

Portia: The one of them contains my picture, prince:
 If you choose that, then I am yours withal.

Prince of Morocco: Some god direct my judgment! Let me see;
 I will survey the inscriptions back again.
 What says this leaden casket?

 Must give: for what? for lead? hazard for lead?
 This casket threatens. Men that hazard all
 Do it in hope of fair advantages:
 A golden mind stoops not to shows of dross;
 I'll then nor give nor hazard aught for lead.
 What says the silver with her virgin hue?

 As much as he deserves! Pause there, Morocco,
 And weigh thy value with an even hand:
 If thou be'st rated by thy estimation,
 Thou dost deserve enough; and yet enough
 May not extend so far as to the lady:
 And yet to be afeard of my deserving
 Were but a weak disabling of myself.
 As much as I deserve! Why, that's the lady:
 I do in birth deserve her, and in fortunes,
 In graces and in qualities of breeding;
 But more than these, in love I do deserve.
 What if I stray'd no further, but chose here?
 Let's see once more this saying graved in gold

 Why, that's the lady; all the world desires her;
 From the four corners of the earth they come,
 To kiss this shrine, this mortal-breathing saint:
 The Hyrcanian deserts and the vasty wilds
 Of wide Arabia are as thoroughfares now
 For princes to come view fair Portia:
 The watery kingdom, whose ambitious head
 Spits in the face of heaven, is no bar
 To stop the foreign spirits, but they come,
 As o'er a brook, to see fair Portia.
 One of these three contains her heavenly picture.
 Is't like that lead contains her? 'Twere damnation
 To think so base a thought: it were too gross
 To rib her cerecloth in the obscure grave.
 Or shall I think in silver she's immured,
 Being ten times undervalued to tried gold?
 O sinful thought! Never so rich a gem
 Was set in worse than gold. They have in England
 A coin that bears the figure of an angel
 Stamped in gold, but that's insculp'd upon;
 But here an angel in a golden bed
 Lies all within. Deliver me the key:
 Here do I choose, and thrive I as I may!

Portia: There, take it, prince; and if my form lie there,
 Then I am yours.

[He unlocks the golden casket]

Prince of Morocco: O hell! what have we here?
 A carrion Death, within whose empty eye
 There is a written scroll! I'll read the writing.
 [Reads]

 Cold, indeed; and labour lost:
 Then, farewell, heat, and welcome, frost!
 Portia, adieu. I have too grieved a heart
 To take a tedious leave: thus losers part.

 [Exit with his train.

- From The Merchant of Venice by William Shakespeare, Act II Scene 7