From previous ..

But nothing is impossible now, there was a time  man could not reach the moon,  it was impossible to see  into the atom, do you know what exactly is impossible in this universe,  the thing one dies not try for is the only impossible thing to obtain,  when efforts are done  nothing remains unobtainable , he was highly impressed by the London police and the Scotland yard,  honest in world, thorough in their work , he  had returned a trained criminologist