In the 1984 picture above, Steve Jobs is young and looks determined. He is at the beginning of his technological adventure. He holds one of the first Apple Macs.
In the second picture, taken a few months before his death, he has the look of someone who has achieved his goal, though he looks older than his years. The MacAir he is holding uses brand new technology.
Jobs was old and ill, but his ideas were as young as ever.