"Some years ago another First Presidency made this statement, and your First Presidency today echoes the appeal. I quote, 'To the youth ... we plead with you to live clean [lives], for the unclean life leads only to suffering, misery, and woe physically, — and spiritually it is the path to destruction. How glorious and near to the angels is youth that is clean; this youth has joy unspeakable here and eternal happiness hereafter. Sexual purity is youth's most precious possession; it is the foundation of all righteousness.'
"May you have the courage to be chaste and virtuous."
Thomas S. Monson, "May You Have Courage," Ensign, May 2009, 126