EVERYDAY SCIENCE

Detailed explanation-1: -Al-Kindi is credited with developing a method whereby variations in the frequency of the occurrence of letters could be analyzed and exploited to break ciphers (i.e. cryptanalysis by frequency analysis).

Detailed explanation-2: -Al-Kindi’s philosophical theology thus has two main aspects: a proof that there must be some “true One” that is the cause of the unity in all things, and a discussion of the nature of this true One. These aspects are treated, respectively, in the third and fourth sections of On First Philosophy.

Detailed explanation-3: -“One must not be afraid of new ideas, no matter the source. And we must never fear the truth, even when it pains us.” “We ought not to be embarrassed of appreciating the truth and of obtaining it wherever it comes from, even if it comes from races distant and nations different from us.

Detailed explanation-4: -It has been shown that the universe is finite in respect to body, time and motion, which means that it must have been created. According to the law of causality everything created in time must have a creator. God, therefore, is its creator and He is consequently existent.