Complex sentence: The reforms of Cluny and later of Clairvaux were not favourable to studies, as the chief aim of the reformers was to combat the secular spirit and re-establish strict religious observances.
Split into simpler sentences: The reforms of Cluny and later of Clairvaux were not favourable to studies. The chief aim of the reformers was to combat the secular spirit and re-establish strict religious observances.