Where theory lags behind the facts, we are dealing with miserable degenerating research programmes."
How fleet is a glance of the mind!Compared with the speed of its flightThe tempest itself lags behind,And the swift-winged arrows of light.william cowper
They say that each generation inherits from those that have gone before; if this were so there would be no limit to man's improvements or to his power of reaching perfection. But he is very far from receiving intact that storehouse of knowledge which the centuries have piled up before him; he may perfect some inventions, but in others, he lags behind the originators, and a great many inventions have been lost entirely. What he gains on the one hand, he loses on the other.eugène delacroix
How fleet is a glance of the mind! Compared with the speed of its flight, The tempest itself lags behind, And the swift-winged arrows of light.william cowper
Upon my lips the breath of song, Within my heart a rhyme, Howe'er time trips or lags along, I keep abreast with time!