Never crowd youngsters about their private affairs - sex especially. When they are growing up, they are nerve ends all over, and resent (quite properly) any invasion of their privacy. Oh, sure, they'll make mistakes - but that's their business, not yours. (You made your own mistakes, did you not?)
Robert A. HeinleinHappiness lies in being privileged to work hard for long hours in doing whatever you think is worth doing. One man may find happiness in supporting a wife and children. Another may find it in robbing banks. Still another may labor mightily for years in pursuing pure research with no discernible result. Note the individual and subjective nature of each case. No two are alike and there is no reason to expect them to be. Each man or woman must find for himself or herself that occupation in which hard work and long hours make him or her happy.
Robert A. HeinleinRemember this: once the human race is established on more than one planet and especially, in more than one solar system, there is no way now imaginable to kill off the human race.
Robert A. Heinlein