The devil quickly finds work for idle hands and an angel quickly finds work for diligent hands. In this world of constant movement and constant change man, whether he wants to or not, must always be busy, be it either good works or evil works. The idle man, actually is not lazy. He is a diligent worker of the devil. An idle body and an idle soul is the most suitable field for the devil’s plowing and sowing. St. Anthony the Great said: “The body needs to be subdued and immersed in prolonged labors.” St. Ephrem the Syrian teaches: “Teach yourself to work, so that you will not have to learn to beg.” All of the other Holy Fathers, without exception, speak about the necessity of work for the salvation of the soul of man. The apostles and all the saints give to us an example of continuous and concentrated spiritual and physical labor. That the idle man, by his idleness, does not extend his life on earth but shortens it, is clearly shown by the longevity of many saints, the greatest laborers among the laborers in the world.
Source: http://www.westsrbdio.org/prolog/prolog.htm [April 25th]