Men who have flattered ...

Men who have flattered themselves into this opinion of their own abilities, look down on all who waste their lives over books, as a race of inferior beings condemned by nature to perpetual pupilage, and fruitlessly endeavouring to remedy their barrenness by incessant cultivation, or succour their feebleness by subsidiary strength. They presume that none would be more industrious than they, if they were not more sensible of deficiences; and readily conclude, that he who places no confidence in his own powers owes his modesty only to his weakness.
Men who have flattered themselves into this opinion of their own abilities, look down on all who waste their lives over books, as a race of inferior beings condemned by nature to perpetual pupilage, and fruitlessly endeavouring to remedy their barrenness by incessant cultivation, or succour their feebleness by subsidiary strength. They presume that none would be more industrious than they, if they were not more sensible of deficiences; and readily conclude, that he who places no confidence in his own powers owes his modesty only to his weakness.

Quotes from the same author

If a man does not make new acquaintances as he advances through life, he will soon find himself left alone. A man, sir, should keep his friendship in a constant repair.
To keep your secret is wisdom; but to expect others to keep it is folly.
Love is the wisdom of the fool and the folly of the wise.
Memory is the mother of all wisdom.
Friendship, like love, is destroyed by long absence, though it may be increased by short intermissions.