Holiday in Hordaland – Hordaland Travel for . . The historical study of the ideas of other societies should be undertaken as an indispensable and irreplaceable means of placing limits on these constraints. . . . To learn from the past”and we cannot otherwise learn it at all”the distinction between what is necessary and what is the product merely of our own contingent arrangements, is to learn the key to self-awareness itself. Holiday in Hordaland – Hordaland Travel 2016.