Siach Sarfei Kodesh Sunday: Fast Davening and Impure Thought(s)
שיח שרפי קודש א:תרנח
(Painting by Marc Chagall)
Someone once asked Reb Nosson if he preferred to daven quickly so as not to have impure thoughts. Reb Nosson answered: "One can pray quickly and still think about a single impure thought over the course of the entire davening! However, when one davens at a moderate pace he can at least have good thoughts in between..."