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 IngersollThe intellectual advancement of man depends on how often he can exchange an old superstition for a new truth.
Robert Green IngersollWhy should we desire the destruction of human passions? Take passions from human beings and what is left? The great object should be not to destroy passions, but to make them obedient to the intellect. To indulge passion to the utmost is one form of intemperance - to destroy passion is another. The reasonable gratification of passion under the domination of the intellect is true wisdom and perfect virtue.
Robert Green Ingersoll