* You do not make a racehorse out of a donkey
Expression used here and there by Almost Everyone
You do not make a brilliant and clever person out of a stupid one.
"Tu te rends compte elle ne sais même pas qui est Barack Obama?" "En même temps on ne fait pas d’un âne un cheval de course!"
"Do you realize that she does not even know who Barack Obama is?" "Well, you do not make a racehorse out of a donkey."
Added August 2020 by syz
6 out of 11 French speakers have heard this