Complex sentence: Erslev was inspired in his early days by the idea that historians was able to create "true science", however, in his older days he became disillusioned by his previous ideas Jan N.H. Jensen-Kr. Erslev og objektivitetsproblemet i begyndelsen af det 20.
Split into simpler sentences: Erslev was inspired in his early days by the idea that historians was able to create "true science". However, in his older days he became disillusioned by his previous ideas Jan N.H. Jensen-Kr. Erslev og objektivitetsproblemet i begyndelsen af det 20.