Marriage...is the union of two people of different sexes with a view to the mutual possession of each other's sexual attributes for the duration of their lives.

But although all our knowledge begins with experience, it does not follow that it arises from experience.

Intuition and concepts constitute... the elements of all our knowledge, so that neither concepts without an intuition in some way corresponding to them, nor intuition without concepts, can yield knowledge.

In man (as the only rational creature on earth) those natural capacities which are directed to the use of his reason are to be fully developed only in the race, not in the individual.

One is not rich by what one owns, but more by what one is able to do without with dignity.

Riches ennoble a man's circumstances, but not himself.

But only he who, himself enlightened, is not afraid of shadows.