"Sufficient indications of his will are always given, and those who will not then believe, neither would they believe though one should rise from the dead to inform them. Who can trace the progress of these colonies, and mark the incidents of the wars in which they have been engaged, without seeing evident tokens of providential favor. Let us, therefore, inflexibly persevere in exerting our most strenuous efforts in a humble and rational dependence on the great Governor of all the world, and we have the fairest prospects of surmounting all the difficulties which may be thrown in our way. That we may expect, and that we shall have, difficulties, sore difficulties, yet to contend against in our progress to maturity, is certain; and, as the political happiness or wretchedness of ourselves and our children, and of generations yet unborn, is in our hands,--nay, more, the redemption of Africa from the deep degradation, superstition, and idolatry in which she has so long been involved,--it becomes us to lay our shoulders to the wheel, and manfully resist every obstacle which may oppose our progress in the great work which lies before us." Mr. Roberts, we believe, is extensively engaged in commerce and agriculture, and, though out of office, makes himself useful in the moral, social, and intellectual elevation of his brethren. No one is more respected, or stands higher, in Liberia than he. ALEXANDER CRUMMELL. Among the many bright examples of the black man which we present, one of the foremost is Alexander Crummell. Blood unadulterated, a tall and manly figure, commanding in appearance, a full and musical voice, fluent in speech, a graduate of Cambridge University, England, a mind stored with the richness of English literature, competently acquainted with the classical authors of Greece and Rome, from the grave Thucydides to the rhapsodical Lycophron, gentlemanly in all his movements, language chaste and refined, Mr. Crummell may well be put forward as one of the best and most favorable representatives of his race. He is a clergyman of the Episcopal denomination, and deeply versed in theology. His sermons are always written, but he reads them as few persons can. In 1848 Mr. Crummell visited England, and delivered a well-conceived address before the Anti-Slavery Society in London, where his eloquence and splendid abilities were at once acknowledged and appreciated. The year before his departure for the old world, he delivered a "Eulogy on the Life and Character of Thomas Clarkson," from which we make the following extract, which is full of meaning and eloquence:--