It is conceivable that religion may be morally useful without being intellectually sustainable.

God is a word to express, not our ideas, but the want of them.

Trade is a social act.

The love of power and the love of liberty are in eternal antagonism.

The application of algebra to geometry ... has immortalized the name of Descartes, and constitutes the greatest single step ever made in the progress of the exact sciences.

Marriage is the only actual bondage known to our law. There remain no legal slaves, except the mistress of every house.

The reasons for legal intervention in favour of children apply not less strongly to the case of those unfortunate slaves and victims of the most brutal part of mankind - the lower animals.