Let his conscience and virtue be eminently manifest in his speaking, and have only reason for their guide. Make him understand, that to acknowledge the error he shall discover in his own argument, though only found out by himself, is an effect of judgment and sincerity, which are the principal things he is to seek after; that obstinacy and contention are common qualities, most appearing in mean souls; that to revise and correct himself, to forsake an unjust argument in the height and heat of dispute, are rare, great, and philosophical qualities.
Let him be advised, being in company, to have his eye and ear in every corner; for I find that the places of greatest honour are commonly seized upon by men that have least in them, and that the greatest fortunes are seldom accompanied with the ablest parts. I have been present when, whilst they at the upper end of the chamber have been only commenting the beauty of the arras, or the flavour of the wine, many things that have been very finely said at the lower end of the table have been lost and thrown away. Let him examine every man’s talent; a peasant, a bricklayer, a passenger: one may learn something from every one of these in their several capacities, and something will be picked out of their discourse whereof some use may be made at one time or another; nay, even the folly and impertinence of others will contribute to his instruction. By observing the graces and manners of all he sees, he will create to himself an emulation of the good, and a contempt of the bad.
Let an honest curiosity be suggested to his fancy of being inquisitive after everything; whatever there is singular and rare near the place where he is, let him go and see it; a fine house, a noble fountain, an eminent man, the place where a battle has been anciently fought, the passages of Caesar and Charlemagne:
“Qux
tellus sit lenta gelu, quae putris ab aestu,
Ventus
in Italiam quis bene vela ferat.”
["What country is bound in frost,
what land is friable with heat,
what wind serves fairest for Italy.”—Propertius,
iv. 3, 39.]
Let him inquire into the manners, revenues, and alliances of princes, things in themselves very pleasant to learn, and very useful to know.