The greatness of a life can only be estimated by the multitude of its actions. We should not count the years, it is our actions which constitute our life.
Gottfried LeibnizIt is worth noting that the notation facilitates discovery. This, in a most wonderful way, reduces the mind's labour.
Gottfried LeibnizTaking mathematics from the beginning of the world to the time when Newton lived, what he had done was much the better half.
Gottfried Leibniz