Long journeys in search of truth are not commanded. Truth, such as is necessary to the regulation of life, is always found where it is honestly sought. Change of place is no natural cause of the increase of piety, for it inevitably produces dissipation of mind.
 Samuel Johnson, The History of Rasselas, Prince of Abissinia (1759). copy citation

Context

““ You know, ” said the Prince, “ how little my life has made me acquainted with diversity of opinions; it will be too long to hear the arguments on both sides; you, that have considered them, tell me the result. ” “ Pilgrimage, ” said Imlac, “ like many other acts of piety, may be reasonable or superstitious, according to the principles upon which it is performed. Long journeys in search of truth are not commanded. Truth, such as is necessary to the regulation of life, is always found where it is honestly sought. Change of place is no natural cause of the increase of piety, for it inevitably produces dissipation of mind. Yet, since men go every day to view the fields where great actions have been performed, and return with stronger impressions of the event, curiosity of the same kind may naturally dispose us to view that country whence our religion had its beginning, and I believe no man surveys those awful scenes without some confirmation of holy resolutions.” source