All socialism involves slavery.

Those who have never entered upon scientific pursuits know not a tithe of the poetry by which they are surrounded.

The preservation of health is a duty. Few seem conscious that there is such a thing as physical morality.

Education has for its object the formation of character.

People are beginning to see that the first requisite to success in life is to be a good animal.

The wise man must remember that while he is a descendant of the past, he is a parent of the future.

Government is essentially immoral.

Hero-worship is strongest where there is least regard for human freedom.

Who indeed, after pulling off the coloured glasses of prejudice and thrusting out of sight his pet projects, can help seeing the folly of these endeavours to protect men against themselves? A sad population of imbeciles would our schemers fill the world with, could their plans last.

The Republican form of government is the highest form of government: but because of this it requires the highest type of human nature, a type nowhere at present existing.

Science is organized knowledge.

Objects we ardently pursue bring little happiness when gained; most of our pleasures come from unexpected sources.

Marriage: A word which should be pronounced 'mirage'.

Marriage: a ceremony in which rings are put on the finger of the lady and through the nose of the gentleman.

The wise man must remember that while he is a descendant of the past, he is a parent of the future.

A jury is composed of twelve men of average ignorance.

The more specific idea of Evolution now reached is - a change from an indefinite, incoherent homogeneity to a definite, coherent heterogeneity, accompanying the dissipation of motion and integration of matter.

The great aim of education is not knowledge but action.