The meaning of life is simply confirmed by the fatal failure of those who reject it: some of them (the theoretic pessimists) must live unworthily, in contradiction to their own preaching, and others (the practical pessimists or the suicides) in denying the meaning of life have actually to deny their own existence. Life clearly must have a meaning, since those who deny it inevitably negate themselves, some by their unworthy existence, and others by their violent death.
Vladimir Soloviev, The Justification of the Good, von Peters, tr., Catholic Resources (Chattanooga, TN: 2015), p. 8.