“Imprisonment is the form of punishment which may detrimentally affect not only the offender but also his family and his employment and because of its duration it can seldom be kept from becoming general public knowledge. It [...] can have a lasting demoralising effect on the character and personality of the offender. The loss of liberty, tedium, regimentation [...] which prison life entails, have a greater potentiality than a whipping for destroying the offender's self-esteem and the integrity of his character and for changing, for the worse, his way of life.”