Intelligent
Part of speech: adjective
Definition: of high or especially quick cognitive capacity, bright. well thought-out, well considered characterized by thoughtful interaction Having the same level of brain power as mankind.
Example sentence: An intelligent person is never afraid or ashamed to find errors in his understanding of things.
Reasoning
Part of speech: noun
Definition: Action of the verb to reason.The deduction of inferences or interpretations from premises; abstract thought; ratiocination.
Part of speech: verb
Definition: To deduce or come to a conclusion by being rational
Example sentence: Where all is but dream, reasoning and arguments are of no use, truth and knowledge nothing.