Be a philosopher but, amid all your philosophy be still a man.

There is a set of harmless liars, frequently to be met with in company, who deal much in the marvellous. Their usual intention is to please and entertain; but as men are most delighted with what they conceive to be the truth, these people mistake the means of pleasing, and incur universal blame.

To consider the matter aright, reason is nothing but a wonderful and unintelligible instinct in our souls, which carries us along a certain train of ideas, and endows them with particular qualities, according to their particular situations and relations. This instinct, 'tis true, arises from past observation and experience; but can anyone give the ultimate reason, why past experience and observation produces such an effect, any more than why nature alone should produce it?

In public affairs men are often better pleased that the truth, though known to everybody, should be wrapped up under a decent cover than if it were exposed in open daylight to the eyes of all the world.

The difference between a man who is led by opinion or emotion and one who is led by reason. The former, whether he will or not, performs things of which he is entirely ignorant; the latter is subordinate to no one, and only does those things which he knows to be of primary importance in his life, and which on that account he desires the most; and therefore I call the former a slave, but the latter free.

Avarice, the spur of industry.

The corruption of the best things gives rise to the worst.