Half our mistakes in life arise from feeling where we ought to think, and thinking where we ought to feel.
In prosperity our friends know us; in adversity we know our friends.
Envy and fear are the only passions to which no pleasure is attached.
A fool often fails because he thinks what is difficult is easy.
Truth is the object of philosophy, but not always of philosophers.
The secret of success in life is known only by those who have not succeeded.