Translation of "Optimism" in Chinese

Optimism is merely a lack of information.

乐观主义仅仅是一种信息的匮乏的产物。

Optimism is like the lamp of hope. Pessimism [or negativity] is like a drug of sorrow.

樂觀如明燈,照亮希望的前程. 消極如毒品,腐蝕健康的心靈.