And all manner of actions, from which, until now, he would have recoiled in shame, such as spying, to-night, outside a window, to-morrow, for all he knew, putting adroitly provocative questions to casual witnesses, bribing servants, listening at doors, seemed to him, now, to be precisely on a level with the deciphering of manuscripts, the weighing of evidence, the interpretation of old monuments, that was to say, so many different methods of scientific investigation, each one having a definite intellectual value and being legitimately employable in the search for truth.