Directions: Arrange the following sentences to form a coherent paragraph.

A. Nothing is more usual and more natural for those, who pretend to discover anything new to the world in philosophy and the sciences, than to insinuate the praises of their own systems, by decrying all those, which have been advanced before them. B. It is easy for one of judgment and learning, to perceive the weak foundation even of those systems, which have obtained the greatest credit, and have carried their pretensions highest to accurate and profound reasoning. C. Principles taken upon trust, consequences lamely deduced from them, want of coherence in the parts, and of evidence in the whole, these are every where to be met with in the systems of the most eminent philosophers, and seem to have drawn disgrace upon philosophy itself. D. Nor is there required such profound knowledge to discover the present imperfect condition of the sciences. E. There is nothing which is not the subject of debate, and in which men of learning are not of contrary opinions.