To hide the notes.
He was hiding the notes because they're not allowed during the test.
The mother's character is being portrayed as a selfless human being. She would rather be hurt than to see any of her children go through pain. It shows her strength and the kindness of her being.
The sentence that best conveys this stated idea is;
- "No man would think what desperate deceit and wickedness there is in the hearts of men."
This sentence shows that all sets of people, no matter what they profess to be spiritually or secularly cannot be predicted and thus, have the same tendencies towards sin.
He is here implying that no one can vouch for another.
Both religious and civil leaders when placed in positions of too much power can execute deceit and harm on their fellow man.
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