Pessimist: One who, when he has the choice of two evils, chooses both.
悲观主义者是这种人：当他可以从两种罪恶中选择时，他把两种都选了。
Life is too important to be taken seriously.
The fight against infectious diseases is a global effort that transcends borders.
The truth is a beautiful and terrible thing, and should therefore be treated with great caution.
"The past is a shadow that follows us, but it is the light ahead that guides us."
每一次突破都始于一个问题，而每一个问题都是迈向未知的一步。