It is certain that success naturally confirms in us a favourable opinion of our own abilities. Scarce any man is willing to allot to accident, friendship, and a thousand causes, which concur in every event without human contrivance or interposition, the part which they may justly claim in his advancement. We rate ourselves by our fortune rather than our virtues, and exorbitant claims are quickly produced by imaginary merit.

While an author is yet living, we estimate his powers by his worst performance; and when he is dead, we rate him by his best.

If your determination is fixed, I do not counsel you to despair. Few things are impossible to diligence and skill. Great works are performed not by strength, but perseverance.

I am far from any intention to limit curiosity, or confine the labours of learning to arts of immediate and necessary use. It is only from the various essays of experimental industry, and the vague excursions of mind set upon discovery, that any advancement of knowledge can be expected; and though many must be disappointed in their labours, yet they are not to be charged with having spent their time in vain; their example contributed to inspire emulation, and their miscarriage taught others the way to success.

Of all kinds of credulity, the most obstinate is that of party-spirit; of men, who, being numbered, they know not why, in any party, resign the use of their own eyes and ears, and resolve to believe nothing that does not favor those whom they profess to follow.

A fallible being will fail somewhere.

Every old man complains of the growing depravity of the world, of the petulance and insolence of the rising generation.