It is only with the heart that one can see rightly; what is essential is invisible to the eyes.这句话的 one 指代上句的什么,怎么看

It is the only It is the only. the only thing wrong with the weekend,they think,is that it does not last longer It is only with the heart that one can see rightly； what is essential is invisible to the eye. The only thing wrong with immortality is it trends to forever This is the only book_I can find.A that B which C it D with which the trouble with exercise is that it works well only if he or she is interested in it it's only with the heart that one can see rightly,what is essential is invisible to the eye it is the only neet thing to Not very special,it is the only. Not very special it is the only It is only the fairy tale. [ ]is the cat?-----It's only one. is it only the jacket or pants it is the same with 如何翻译此句子?It is only the interests of the masses with which we are concerned. love it with only even it is only chatting with you什么意思