Question

Raj was a very foolish man he had no common sense he always did the silliest of thing he lived in a small village he carned his livehood by cut by cutting and selling wood

Answer 1

Raj is not foolish even no one is foolish, he is doing the work for his daily needs.
if you want to prove someone foolish first educate him upto your level and if then he/she do foolish things then only you can define him as foolish.