in·sight 
/ˈɪnˌsaɪt/ noun
plural in·sights /ˈɪnˌsaɪt/ noun 1 [noncount] : the ability to understand people and situations in a very clear way
▪ He is a leader of great insight. 2 : an understanding of the true nature of something [noncount] ▪ The author analyzes the problem with remarkable insight. — often + into ▪ We need to gain insight into the politics of the region. [count] ▪ I had a sudden insight. ▪ Her book provides us with fresh new insights into this behavior.
▪ He is a leader of great insight.
