A gem cannot be polished without friction, nor a man perfected without trials.
— Seneca Ancient

Stoic philosopher

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Details

Context

De Providentia (On Providence), Chapter 4, Section 11

Date / Period

c. 65 AD

Source

https://www.gutenberg.org/files/3796/3796-h/3796-h.htm

Verification

Confirmed

Explanation

Found in 2 providers: grok,deepseek

Method

Cross Reference

Sources Checked

2 sources

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