A mind once cultivated will not lie fallow for half an hour.
The object of ambition, unlike that of love, never being wholly possessed, ambition is the more durable passion of the two.
One vice worn out makes us wiser than fifty tutors.
Sharp is the kiss of the falcon's beak.
Genius is but fine observation strengthened by fixity of purpose.
Chance happens to all, but to turn chance to account is the gift of few.