This is my seventieth birthday, and I wonder if you all rise to the size of that proposition, realizing all the significance of that phrase, seventieth birthday. The seventieth birthday! It is the time of life when you arrive at a new and awful dignity; when you may throw aside the decent reserves which have oppressed you for a generation and stand unafraid and unabashed upon your seven-terraced summit and look down and teach--unrebuked. You can tell the world how you got there. It is what they all do. You shall never get tired of telling by what delicate arts and deep moralities you climbed up to that great place. You will explain the process and dwell on the particulars with senile rapture. I have been anxious to explain my own system this long time, and now at last I have the right. [ Mark Twain, Seventieth Birthday speech ]