Solitude vivifies isolation kills.
The happiness which is lacking makes one think even the happiness one has unbearable.
Success causes us to be more praised than known.
Literature was formerly an art and finance a trade: today it is the reverse.
We call that person who has lost his father, an orphan; and a widower that man who has lost his wife. But that man who has known the immense unhappiness of losing a friend, by what name do we call him? Here every language is silent and holds its peace in impotence.
When unhappy, one doubts everything; when happy, one doubts nothing.
Science is for those who learn poetry for those who know.