Famous quotes containing the words sound and/or signal:
“[T]here is only one sound argument for democracy, and that is the argument that it is a crime for any man to hold himself out as better than other men, and, above all, a most heinous offense for him to prove it.”
—H.L. (Henry Lewis)
“The experience of a sense of guilt for wrong-doing is necessary for the development of self-control. The guilt feelings will later serve as a warning signal which the child can produce himself when an impulse to repeat the naughty act comes over him. When the child can produce his on warning signals, independent of the actual presence of the adult, he is on the way to developing a conscience.”
—Selma H. Fraiberg (20th century)