No fact in human nature is more characteristic than its willingness to live on a chance.
 William James, The Varieties of Religious Experience (1902). copy citation

Context

“I think, in fact, that a final philosophy of religion will have to consider the pluralistic hypothesis more seriously than it has hitherto been willing to consider it. For practical life at any rate, the chance of salvation is enough. No fact in human nature is more characteristic than its willingness to live on a chance. The existence of the chance makes [pg 527] the difference, as Edmund Gurney says, between a life of which the keynote is resignation and a life of which the keynote is hope.363 But all these statements are unsatisfactory from their brevity, and I can only say that I hope to return to the same questions in another book.” source