What language was designed based on a theory of recursive functions and is considered to be an ideal language for solving difficult or complex problems?

Here is my best translation:   text analysis.1. read the text.2. determine the main idea of the text.3. determine the type and style of speech.4. write out 5 words and choose synonyms for them.5. find in the text all possible language tools (trails).blessed is he who was young in his youth,blessed is the one who has matured in time,who gradually lives coldwith years i could do it; who did not indulge in strange dreams,who did not shun secular black people,who at twenty was a dandy or a grip,and at thirty is profitable married; who was freed in fifty? from private and other debts,who fame, money and rankscalmly in turn achieved,about whom they have insisted for a whole century: n. n. is a wonderful person.(as pushkin).