Of what consequence to you, reader, is my obscure individuality? I live, like you, in a century in which reason submits only to fact and to evidence. My name, like yours, is TRUTH-SEEKER. [6] My mission is written in these words of the law: SPEAK WITHOUT HATRED AND WITHOUT FEAR; TELL THAT WHICH THOU KNOWEST! The work of our race is to build the temple of science, and this science includes man and Nature. Now, truth reveals itself to all; to-day to Newton and Pascal, tomorrow to the herdsman in the valley and the journeyman in the shop. Each one contributes his stone to the edifice; and, his task accomplished, disappears. Eternity precedes us, eternity follows us: between two infinites, of what account is one poor mortal that the century should inquire about him? Disregard then, reader, my title and my character, and attend only to my arguments. It is in accordance with universal consent that I undertake to correct universal error; from the OPINION of the human race I appeal to its FAITH. Have the courage to follow me; and, if your will is untrammelled, if your conscience is free, if your mind can unite two propositions and deduce a third therefrom, my ideas will inevitably become yours. In beginning by giving you my last word, it was my purpose to warn you, not to defy you; for I am certain that, if you read me, you will be compelled to assent. The things of which I am to speak are so simple and clear that you will be astonished at not having perceived them before, and you will say: "I have neglected to think." Others offer you the spectacle of genius wresting Nature's secrets from her, and unfolding before you her sublime messages; you will find here only a series of experiments upon JUSTICE and RIGHT a sort of verification of the weights and measures of your conscience. The operations shall be conducted under your very eyes; and you shall weigh the result. Nevertheless, I build no system. I ask an end to privilege, the abolition of slavery, equality of rights, and the reign of law. Justice, nothing else; that is the alpha and omega of my argument: to others I leave the business of governing the world.