Reason, observation, and experience; the holy trinity of science.

Reason, Observation and Experience — the Holy Trinity of Science — have taught us that happiness is the only good; that the time to be happy is now, and the way to be happy is to make others so. This is enough for us. In this belief we are content to live and die. If by any possibility the existence of a power superior to, and independent of, nature shall be demonstrated, there will then be time enough to kneel. Until then, let us stand erect.

At the bottom of the ladder is Catholicism, and at the top is Science

Science built the Academy, superstition the inquisition

Reason, Observation, and Experience -- the Holy Trinity of Science.

The notion that faith in Christ is to be rewarded by an eternity of bliss, while a dependence upon reason, observation, and experience merits everlasting pain, is too absurd for refutation, and can be relieved only by that unhappy mixture of insanity and ignorance called 'faith.'