Nothing is sure. Everything is elusive and in the air. In an outburst of passion Lamennais exclaims: "But what! Shall we, losing all hope, shut our eyes and plunge into the voiceless depths of a universal scepticism? Shall we doubt that we think, that we feel, that we are? Nature does not allow it; she forces us to believe even when our reason is not convinced. Absolute certainty and absolute doubt are both alike forbidden to us. We hover in a vague mean between these two extremes, as between being and nothingness; for complete scepticism would be the extinction of the intelligence and the total death of man. But it is not given to man to annihilate himself; there is in him something which invincibly resists destruction, I know not what vital faith, indomitable even by his will. Whether he likes it or not, he must believe, because he must act, because he must preserve himself. His reason, if he listened only to that, teaching him to doubt everything, itself included, would reduce him to a state of absolute inaction; he would perish before even he had been able to prove to himself that he existed" (_Essai sur l'indifférence en matière de religion_, iii^e partie, chap. lxvii.). Reason, however, does not actually lead us to absolute scepticism. No! Reason does not lead me and cannot lead me to doubt that I exist. Whither reason does lead me is to vital scepticism, or more properly, to vital negation--not merely to doubt, but to deny, that my consciousness survives my death. Scepticism is produced by the clash between reason and desire. And from this clash, from this embrace between despair and scepticism, is born that holy, that sweet, that saving incertitude, which is our supreme consolation.