Sutra:
274. uyyakkoNdAr vishayamAga udaiyavar aruLic seydha vArththaiyai smarippadhu.

Sri PBA Swami's Sarartha Deepikai:
An episode is shown here that shows the difficulty in a chetana gaining a taste for this.

During Ramanuja's time, there was a devotee called Uyyakkondar who was following the path of bhakti. Ramanuja taught him the meaning of the Carama Shloka in order to make him follow the path of prapatti. Uyyakkondar then told Ramanuja "These meanings are indeed very beautiful. But I don't have the liking to give up on that (bhakti) and seek this (prapatti)". Ramanuja replied "Because you have knowledge, you accepted the meaning. But, as you don't have the grace of the Lord, you did not get the liking for it".

These words of Ramanuja are to be thought here.