Nobody knows everything that's hidden in the balance sheets of banks. In fact, they are completely impenetrable. — Jerome Kerviel Copy Share Image
The minds of different generations are as impenetrable one by the other as are the monads of Leibniz. — Andre Maurois Copy Share Image
The numinous depth of the mystery that seems to have called us out of the animal mind is completely impenetrable to modern… — Terence McKenna Copy Share Image
His whole life was now summed up in two words: absolute uncertainty within an impenetrable fog. — Victor Hugo Copy Share Image
I think it's easy to make impenetrable music that nobody can get, and you can hide behind that sometimes. — Trent Reznor Copy Share Image
