To build a city where it is impossible to build a city is madness in itself, but to build there one of the most elegant and grandest of cities is the madness of genius.

Slavery is the first step towards civilization. In order to develop it is necessary that things should be much better for some and much worse for others, then those who are better off can develop at the expense of others.

A generation which has passed through the shop has absorbed standards and ambitions which are not of those of spaciousness, and cannot get away from them. Everything with them is done as though for sale, and they naturally have in view the greatest possible benefit, profit and that end of the stuff that will make the best show.

The people is always expressive of the truth. The life of a people cannot be a lie.

Life has taught me to think, but thinking has not taught me to live.

False gods must be repudiated, but that is not all: The reasons for their existence must be sought beneath their masks.

Science even more than the Gospel teaches us humility. She cannot look down on anything, she does not know what superiority means, she despises nothing, never lies for the sake of a pose, and conceals nothing out of coquetry. She stops before the facts as an investigator, sometimes as a physician, never as an executioner, and still less with hostility and irony.