Attempt to go through all our sacred books in the course of your lifetime. You will have then visited every place in the Torah. The very rich constantly travel from land to land. They spend huge amounts just so that they should be able to boast that they have been to some faraway place. They consider it a sign of high status if, for example, they can boast that they have been to Warsaw. You should likewise travel everywhere in the Torah. In the Future Life you will then be able to boast that you have visited every place in our sacred literature. At that time, you will also remember everything you have ever learned.
(Sichos HaRan #28)