I don't measure success in numbers, but I consider my contributions of more than $1.3 billion to various causes over the years to be one of my proudest accomplishments and the best investment I've ever made. Those dollars have improved lives, saved species, fought disease, educated children, inspired change, challenged ideas and opened minds; at the time of my death, virtually all of my wealth will have gone to charity.
We're too many people; that's why we have global warming...on a voluntary basis, everybody in the world's got to pledge to themselves that one child is it.
There is no greater legacy that we can leave our children and grandchildren than a peaceful and safer world.
