6, 7. (a) What truths have we been helped to understand since the 1870 ’ s? ( b) What truths have you particularly appreciated learning?
( क) आपल्याला १८७० च्या दशकापासून आजपर्यंत कोणती सत्ये समजून घेण्यास साहाय्य मिळाले आहे?