Youth cannot know how age thinks and feels. But old men are guilty if they forget what it was to be young.
– J.K. Rowling
The old repeat themselves and the young have nothing to say. The boredom is mutual.
– Jacques Bainville
Not everyone grows to be old, but everyone has been younger than he is now.
– Evelyn Waugh
In youth we run into difficulties. In old age difficulties run into us.
– Beverly Sills
WeirdGuy Creative 
And don’t forget this one: Youth is wasted on the young
Philosophical dribble. Book of Proverbs has it all, especially chapter 23. Verse 19: “Listen my son, and be wise, and keep your heart on the right path.” True in any faith and at any age.
Actually one of the challenges which individuals starting a brand new on-line firm face is that of acquiring visitors to their net site.