Verb
To enter into; to make way into the interior of; to effect an entrance into; to pierce; as, light penetrates darkness.
To affect profoundly through the senses or feelings; to touch with feeling; to make sensible; to move deeply; as, to penetrate one's heart with pity.
To pierce into by the mind; to arrive at the inner contents or meaning of, as of a mysterious or difficult subject; to comprehend; to understand.
To pass; to make way; to pierce. Also used figuratively.
Source: Webster's dictionaryAn army of principles can penetrate where an army of soldiers cannot. Thomas Paine
Mathematicians have tried in vain to this day to discover some order in the sequence of prime numbers, and we have reason to believe that it is a mystery into which the human mind will never penetrate. Leonhard Euler
Vehicular traffic is completely forbidden in the green strips, where tranquility shall reign and the curse of noise shall not penetrate. Le Corbusier
The violinist must possess the poet's gift of piercing the protective hide which grows on propagandists, stockbrokers and slave traders, to penetrate the deeper truth which lies within. Yehudi Menuhin
Opinions are like nails: the more often you hit them the deeper they penetrate. Chinese Proverb
The eye cannot penetrate darkness. Maasai Proverb