"Nothing will come of nothing" means that if you don't put in any effort or take any action, you will not achieve anything; essentially, you cannot expect results without taking steps to produce them.
The idea aligns with the philosophical concept "ex nihilo nihil fit" (from nothing, nothing comes), which suggests that something cannot be created out of absolute nothingness.
This phrase is most commonly associated with Shakespeare's play "King Lear" where the character Lear says it to his daughter Cordelia when she refuses to excessively flatter him, implying that if she doesn't actively show her love, she will receive no benefits from him.
- source: dear Google with editing
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The phrase and the post by 蒋老师 here yesterday started me wondering: Where did the first life on earth come from? Where did the earth come from? Where did our solar system come from? Where did our universe come from? All from the Big Bang? Hmm ...
Back to the Bard of Avon (== the great Shakespeare), I actually enjoy the *sounds* of his plays the most. He was so talented with the English language, his words sound like poems and songs that last long after him.
So please allow me to present a clip of "King Lear" (with cc 
) and you will see and hear "Nothing will come of nothing" near the beginning. If you have more time, you might like to hear it the 2nd time with eyes closed. Sounds wonderful! Doesn't it? 
