In the deepest heart of all of us there is a corner in which the ultimate mystery of things works sadly.
Success or failure depends more upon attitude than upon capacity.
The greatest weapon against stress is our ability to choose one thought over another.
The mind is made up by what it feeds upon.
It is not probable that the reader will be satisfied with any of these solutions, and contemporary philosophers, even rationalistically minded ones, have on the whole agreed that no one has intelligibly banished the mystery of fact.
If WE claim only reasonable probability, it will be as much as men who love the truth can ever at any given moment hope to have within their grasp.