It will be no unpleasing effect of this account, if those that shall happen to peruse it, should be inclined by it to reflect on the character of the late proprietors, and to pay some tribute of veneration to their ardour for literature, to that generous and exalted curiosity which they gratified with incessant searches and immense expense, and to which they dedicated that time, and that superfluity of fortune, which many others of their rank employ in the pursuit of contemptible amusements, or the gratification of guilty passions.  And, surely, every man, who considers learning as ornamental and advantageous to the community, must allow them the honour of publick benefactors, who have introduced amongst us authors, not hitherto well known, and added to the literary treasures of their native country.

That our catalogue will excite any other man to emulate the collectors of this library, to prefer books and manuscripts to equipage and luxury, and to forsake noise and diversion for the conversation of the learned, and the satisfaction of extensive knowledge, we are very far from presuming to hope; but shall make no scruple to assert, that, if any man should happen to be seized with such laudable ambition, he may find in this catalogue hints and informations which are not easily to be met with; he will discover, that the boasted Bodleian library is very far from a perfect model, and that even the learned Fabricius cannot completely instruct him in the early editions of the classick writers.

But the collectors of libraries cannot be numerous; and, therefore, catalogues could not very properly be recommended to the publick, if they had not a more general and frequent use, an use which every student has experienced, or neglected to his loss.  By the means of catalogues only, can it be known what has been written on every part of learning, and the hazard avoided of encountering difficulties which have already been cleared, discussing questions which have already been decided, and digging in mines of literature which former ages have exhausted.

How often this has been the fate of students, every man of letters can declare; and, perhaps, there are very few who have not sometimes valued as new discoveries, made by themselves, those observations, which have long since been published, and of which the world, therefore, will refuse them the praise; nor can the refusal be censured as any enormous violation of justice; for, why should they not forfeit by their ignorance, what they might claim by their sagacity?

To illustrate this remark, by the mention of obscure names, would not much confirm it; and to vilify, for this purpose, the memory of men truly great, would be to deny them the reverence which they may justly claim from those whom their writings have instructed.  May the shade, at least, of one great English critick[2] rest without disturbance; and may no man presume to insult his memory, who wants his learning, his reason, or his wit.