化学的进步以新元素的发现及其性质的测定为标志。
The act of writing is the act of discovering what you believe.
你不能通过直接的力量改变你的大象,但你可以随着时间的推移训练它。
To be without some of the things you want is an indispensable part of happiness.
心理学是精神生活的科学。
Life is a series of moments, some fleeting, some eternal.