"There is but one pursuit in life which it is in the power of all to follow, and of all to attain. It is subject to no disappointments, since he that perseveres, makes every difficulty an advancement, and every contest a victory; and this is the pursuit of virtue."

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The Catholics have a Pope. Protestants laugh at them, and yet the Pope is capable of intellectual advancement. In addition to this, the Pope is mortal, and the church cannot be afflicted with the same idiot forever. The Protestants have a book for their Pope. The book cannot advance. Year after year, and century after century, the book remains as ignorant as ever.

— Robert Green Ingersoll