If thou desire the love of God and man, be humble, for the proud heart, as it loves none but itself, is beloved of none but itself. Humility enforces where neither virtue, nor strength, nor reason can prevail.

Read not books alone, but men, and amongst them chiefly thyself. If thou find anything questionable there, use the commentary of a severe friend rather than the gloss of a sweet lipped flatterer; there is more profit in a distasteful truth than in deceitful sweetness.

Knowledge can be communicated, but wisdom cannot. A man can find it, he can live it, he can be filled and sustained by it, but he cannot utter or teach it.