He who exulteth not at his own happiness, nor delighteth in another’s misery, and who repenteth not after having made a gift, is said to be a man of good nature and conduct. He who desireth to obtain a knowledge of the customs of different countries, and also the languages of different nations, and of the usages of different orders of men, knoweth at once all that is high and low; and wherever he may go, he is sure to gain an ascendancy over even those that are glad.

In plain words: Vidura says a good person does not gloat over his own happiness, does not enjoy others' suffering, and does not regret giving a gift. Someone who learns the customs, languages, and ways of different peoples understands everyone, high and low, and wins respect wherever he goes.