One that has well digested his knowledge both of books and men, has little enjoyment but in the company of a few select companions. He feels too sensibly, how much all the rest of mankind fall short of the notions which he has entertained. And, his affections being thus confined within a narrow circle, no wonder he carries them further than if they were more general and undistinguished. The gaiety and frolic of a bottle companion improves with him into a solid friendship; and the ardours of a youthful appetite become an elegant passion.

Abstruse thought and profound researches I prohibit, and will severely punish, by the pensive melancholy which they introduce, by the endless uncertainty in which they involve you, and by the cold reception which your pretended discoveries shall meet with, when communicated. Be a philosopher; but, amidst all your philosophy, be still a man.

To begin with clear and self-evident principles, to advance by timorous and sure steps, to review frequently our conclusions, and examine accurately all their consequences; though by these means we shall make both a slow and a short progress in our systems; are the only methods, by which we can ever hope to reach truth, and attain a proper stability and certainty in our determinations.