The barrier during self-improvement is not so much that we hate learning, rather we hate being taught. To learn entails that the knowledge was achieved on one's own accord - it feels great - but to be taught often leaves a feeling of inferiority. Thus it takes a bit of determination and a lot of humility in order for one to fully develop.
Since there is no real silence, Silence will contain all the sounds, All the words, all the languages, All knowledge, all memory.