Richard Feynman was an American theoretical physicist known for his work in the path integral formulation of quantum mechanics, the theory of quantum electrodynamics, and the physics of the superfluidity of supercooled liquid helium, as well as in particle physics for which he proposed the parton model. For his contributions to the development of quantum electrodynamics, Feynman, jointly with Julian Schwinger and Sin-Itiro Tomonaga, received the Nobel Prize in Physics in 1965.
Many believers have backslid. Some have turned away completely while others have turned away only in small degrees. Many will honestly say, "I have lost that love which I first had for the Lord". Many are prepared to say that, but they are not willing to take radical steps to put things right. They see the need to repent; they desire to repent, but they do not repent, for they do not pay the price of repentance.