Among all the people the most detested before Allah are two persons.
One is he who is devoted to his self. So he is deviated from the true path and loves speaking about (foul) innovations and inviting towards wrong path. He is therefore a nuisance for those who are enamored of him, is himself misled from the guidance of those preceding him, misleads those who follow him in his life or after his death, carries the weight of others’ sins and is entangled in his own misdeeds.
The other man is he who has picked up ignorance. He moves among the ignorant, is senseless in
the thick of mischief and is blind to the advantages of peace. Those resembling like men have named him scholar but he is not so.
He goes out early morning to collect things whose deficiency is better than plenty, till when he has quenched his thirst from polluted water and acquired meaningless things. He sits among the people as a judge responsible for solving whatever is confusing to the others. If an ambiguous problem is presented before him he manages shabby argument about it of his own accord and passes judgments on its basis. In this way he is entangled in the confusion of doubts as in the spider’s web, not knowing whether he was right or wrong. If he is right he fears lest he erred, while if he is wrong he hopes he is right. He is ignorant, wandering astray in ignorance and riding on carriages aimlessly moving in darkness. He did not try to find reality of knowledge. He scatters the traditions as the wind scatters the dry leaves.
Amír al-mu’minín Ali A.S.
Sermon 17