If you write upon paper, a careless hand may destroy it.
If you write upon parchment, the dust of the centuries may gather over it.
If you write upon marble, the moss may cover it and the elements may erase it.
If you grave your thoughts with a pen of iron upon the granite cliff, in the slow revolving years it shall wear away and when the earth melts, your writing will perish.
Write then, upon the heart of a youth.
There engrave your thoughts and they shall endure when the world shall pass away and the stars shall fall, and time shall be no more.
For the heart is immortal and your words written there shall live through eternity.