Meaning of the word "it's better to have less thunder in the mouth, and more lightning in the hand" in English

What does "it's better to have less thunder in the mouth, and more lightning in the hand" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

it's better to have less thunder in the mouth, and more lightning in the hand

US /ɪts ˈbet.ər tə hæv les ˈθʌn.dər ɪn ðə ˌmaʊθ ənd mɔːr ˈlaɪt.nɪŋ ɪn ðə ˌhænd/
"it's better to have less thunder in the mouth, and more lightning in the hand" picture
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