The term suicide is applied to all cases of death resulting directly or indirectly from a positive or negative act of the victim himself, which he knows will produce this result

While the State becomes inflated and hypertrophied in order to obtain a firm enough grip upon individuals, but without succeeding, the latter, without mutual relationships, tumble over one another like so many liquid molecules, encountering no central energy to retain, fix and organize them.

It is too great comfort which turns a man against himself. Life is most readily renounced at the time and among the classes where it is least harsh.

Faith is not uprooted by dialectic proof; it must already be deeply shaken by other causes to be unable to withstand the shock of argument.

At this point, an urgent question arises: [...] Is it our duty to seek to become a thorough and complete human being, one quite sufficient unto himself; or, on the contrary, to be only a part of a whole, the organ of an organism? Briefly, is the division of labor, at the same time that it is a law of nature, also a moral rule of human conduct; and, if it has this latter character, why and in what degree?

The man whose whole activity is diverted to inner meditation becomes insensible to all his surroundings. His passions are mere appearances, being sterile. They are dissipated in futile imaginings, producing nothing external to themselves.

One does not advance when one walks toward no goal, or - which is the same thing - when his goal is infinity.