All human knowledge begins with intuitions, proceeds from thence to concepts, and ends with ideas.

The death of dogma is the birth of morality.

Our knowledge springs from two fundamental sources of the mind; the first is the capacity of receiving representations (receptivity for impressions), the second is the power of knowing an object through these representations (spontaneity [in the production] of concepts).

Innocence is indeed a glorious thing; but, unfortunately, it does not keep very well and is easily led astray.

The existence of the Bible is the greatest blessing which humanity ever experienced.

It is not God's will merely that we should be happy, but that we should make ourselves happy

There is no virtue in penance and fasting which waste the body; they are only fanatical and monkish.