“O wonder beyond wonders, rapture, power, and amazement is it, that one can say nothing at all about the gospel, nor even conceive of it, nor compare it with anything.”

Symbol 4
The Symbols

Source: Devil at My Heels

Source: As You Like It

Yes, Virginia, there is a Santa Claus (1897)
Context: Not believe in Santa Claus! You might as well not believe in fairies! You might get your papa to hire men to watch in all the chimneys on Christmas Eve to catch Santa Claus, but even if they did not see Santa Claus coming down, what would that prove? Nobody sees Santa Claus, but that is no sign that there is no Santa Claus. The most real things in the world are those that neither children nor men can see. Did you ever see fairies dancing on the lawn? Of course not, but that's no proof that they are not there. Nobody can conceive or imagine all the wonders there are unseen and unseeable in the world.
You may tear apart the baby's rattle and see what makes the noise inside, but there is a veil covering the unseen world which not the strongest man, nor even the united strength of all the strongest men that ever lived, could tear apart. Only faith, fancy, poetry, love, romance, can push aside that curtain and view and picture the supernal beauty and glory beyond. Is it all real? Ah,, in all this world there is nothing else real and abiding.
No Santa Claus! Thank, nay, ten times ten thousand years from now, he will continue to make glad the heart of childhood.

The Prophecy of Hermes Trismegistus

What we all think; reported in Bartlett's Familiar Quotations, 10th ed. (1919). Compare Browning, Paracelsus: "God! Thou art love! I build my faith on that".

The Faith that Heals (1910)
Context: Nothing in life is more wonderful than faith — the one great moving force which we can neither weigh in the balance nor test in the crucible. Intangible as the ether, ineluctable as gravitation, the radium of the moral and mental spheres, mysterious, indefinable, known only by its effects, faith pours out an unfailing stream of energy while abating nor jot nor tittle of its potency. Well indeed did St. Paul break out into the well-known glorious panegyric, but even this scarcely does justice to the Hertha of the psychical world, distributing force as from a great storage battery without money and without price to the children of men.
Three of its relations concern us here. The most active manifestations are in the countless affiliations which man in his evolution has worked out with the unseen, with the invisible powers, whether of light or of darkness, to which from time immemorial he has erected altars and shrines. To each one of the religions, past or present, faith has been the Jacob's ladder. Creeds pass, an inexhaustible supply of faith remains, with which man proceeds to rebuild temples, churches, chapels and shrines.

Source: Self-Help