The number of such as live without the ardour of inquiry is very small, though many content themselves with cheap amusements, and waste their lives in researches of no importance.

Philosophers there are who try to make themselves believe that this life is happy; but they believe it only while they are saying it, and never yet produced conviction in a single mind.

To expect that the intricacies of science will be pierced by a careless glance, or the eminences of fame ascended without labour, is to expect a peculiar privilege, a power denied to the rest of mankind; but to suppose that the maze is inscrutable to diligence, or the heights inaccessible to perseverance, is to submit tamely to the tyranny of fancy, and enchain the mind in voluntary shackles.

The uncertainty of death is, in effect, the great support of the whole system of life.

I do not know, sir, that the fellow is an infidel; but if he be an infidel, he is an infidel as a dog is an infidel; that is to say, he has never thought upon the subject.

Nothing detains the reader's attention more powerfully than deep involutions of distress, or sudden vicissitudes of fortune; and these might be abundantly afforded by memoirs of the sons of literature. They are entangled by contracts which they know not how to fulfill, and obliged to write on subjects which they do not understand. Every publication is a new period of time, from which some increase or declension of fame is to be reckoned. The gradations of a hero's life are from battle to battle, and of an author's from book to book.

Life cannot subsist in society but by reciprocal concessions.