Meaning of the word "think much, speak little, and write less" in English

What does "think much, speak little, and write less" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

think much, speak little, and write less

US /θɪŋk mʌtʃ, spiːk ˈlɪt.əl, ænd raɪt les/
UK /θɪŋk mʌtʃ, spiːk ˈlɪt.əl, ənd raɪt les/
"think much, speak little, and write less" picture

Idiom

a proverb advising one to be thoughtful and cautious with their words, prioritizing observation and reflection over excessive talking or writing

Example:
In diplomacy, it is often best to think much, speak little, and write less.
He lived by the rule: think much, speak little, and write less to avoid unnecessary trouble.