Two kinds of fools

Those who abuse their intellect are called intellectual fools and those who develop emotional kindness without reasoning are called kind-hearted fools.

Buddha also says that there are two kinds of fools: those who undertake unnecessary burdens and those who do not undertake necessary responsibilities.

Learning and thought must work together

Learning without thought is naught;
thought without learning is dangerous.
~Confucius~

Food for the thinking mind, p. 52-3.