The Deluge: A punishment inflicted on the human race by an all-knowing God, who, through not having foreseen the wickedness of men, repented of having made them, and drowned them once for all to make them better - an act which, as we all know, was accompanied by the greatest success.
All too many Muslims fail to grasp Islam, which teaches one to be lenient towards others and to understand their value systems, knowing that these are tolerated by Islam as a religion.
Lawyers are shy of meddling with the Law on their own account: knowing it to be an edged tool of uncertain application, very expensive in the working, and rather remarkable for its properties of close shaving than for its always shaving the right person.
Knowing things halfway is a greater success than knowing things completely: it takes things to be simpler than they really are andso makes its opinions more easily understandable and persuasive.