A lot of great people in history achieved big things in their sixties, seventies, eighties and even nineties. They have learned new things and skills such as playing musical instruments, making great discoveries, composing great pieces of music and writing bestsellers. I suppose age isn't about numbers in passports, but about the phisycal and mental condition and personal psychological beliefs. A lot of great people in history achieved big things in their sixties, seventies, eighties and even nineties. They have learned new things and skills such as playing musical instruments, making great discoveries, composing great pieces of music and writing bestsellers. I suppose age isn't about numbers in passports, but about the phisycal and mental condition and personal psychological beliefs.