The secret of success in life is known only by those who have not succeeded.
Half our mistakes in life arise from feeling where we ought to think, and thinking where we ought to feel.
To accept a favor from a friend is to confer one.
Truth is the object of philosophy, but not always of philosophers.
If we knew each other's secrets, what comforts we should find.
In prosperity our friends know us; in adversity we know our friends.