કોલસાને સો મણ સાબુથી ઘસતાં ઊજળું ન થાય

kōlasānē sō maṇa sābuthī ghasatāṁ ūjaḷuṁ na thāya

Literally: Coal will not come out white though you scrub it with a hundred maunds of soap.
What it means: Some natures no amount of effort will improve.

Gujarati Wikiquote · English is machine-made and nobody has checked it yet

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