The first principle of the critical school is the allowance in matters of faith of all that is needed, and the adaptation of beliefs to individual wants. Why should we be foolish enough to concern ourselves about things over which no one has any control? If any person adopts our principles it is because he has the mental tendency and the education adapted to them; and all our efforts will not be able to impart this tendency and this education to those who do not naturally possess them. Philosophy differs from faith in this, that faith is believed to operate by itself independently of the intelligence acquired from dogmas. We, on the contrary, hold that truth only possesses value when it comes of itself, and when the order of its ideas is comprehended. We do not consider ourselves obliged to maintain silence in regard to those opinions which may not be in accord with the belief of some of our fellow-creatures; we will make no sacrifice to the exigencies of differing orthodoxies, but neither have we any idea of attacking them; we shall only act as if they did not exist. For myself, it would be really painful to me for any one to convict me of an effort to attract to my side of thinking a solitary adherent who would not come voluntarily. I would conclude that my mind was perturbed in its serene liberty, or that something weighed heavily upon it, if I were no longer able to content myself with the simple and joyous contemplation of the universe. It will readily be supposed that if my object was to make war upon established religions, I should adopt different tactics, and should confine myself to exposing the impossibilities and the contradictions in texts and dogmas that are viewed as sacred. This work has been often and ably done. In 1865[I.61] I wrote as follows: "I protest once for all against the false interpretation which has been given to my writings, in accepting as polemical works the various essays and religious and historical matters which I have published, or may hereafter publish. Viewed as polemical works, these essays, I am well aware, are very unskilful. Polemics demand a strategy to which I am a stranger; it requires the writer to choose the weak point of his adversaries, to hold on to it, to avoid uncertain questions, to beware of all concession, and practically renounce even the essence of scientific spirit. Such is not my method. Revelation and the supernatural--those fundamental questions around which must revolve all religious discussion--I do not touch upon; not because I may not answer these questions with thorough certainty, but because such a discussion is not scientific, or, rather, because independent science presupposes that such questions are already answered. For me to pursue any polemical or proselyting end, would be to bring forward among the most difficult and delicate problems, a question which can be more satisfactorily treated in the more practical phraseology in