N'ime ụwa anyị gbagwojuru anya, ọ bụ ihe ịma aka mgbe niile na mmemme anyị iji hụ na onyonyo anyị nwere nwere ozi zuru oke iji bụrụ ihe nnọchianya nke eziokwu.. N'aka nke ọzọ, ihe ekwesịghịkwa ịdị mgbagwoju anya, n'ihi na mgbe ahụ ị ga-arapara. Einstein kwuru ya ugbua: "Anyị kwesịrị idobe ihe dị mfe dịka o kwere mee mana ọ bụghị nke dị mfe karịa nke ahụ."