C.N. Douglas, comp. Forty Thousand Quotations: Prose and Poetical. 1917.
Gloom
He who is only just is stern; he who is only wise lives in gloom.
Voltaire.
Gloom and sadness are poison to us, and the origin of hysterics. You are right in thinking that this disease is in the imagination; you have defined it perfectly; it is vexation which causes it to spring up, and fear that supports it.
Madame de Sévigné.