We have preached about the youth, now it is time to look at the senor citizens. William Gladstone was 83 when he was the prime minister of England. Michael Angelo was still painting a t age 90. John Wesley was preaching at the age of 88. Thomas Edison at 90 was still inventing. J.C. Penney was still engaged in his business at the age of 95. Evangelist Acker was still preaching at the age of 116.