Virtue that wavers is not virtue, but vice revolted from itself, and after a while returning. The actions of just and pious men do not darken in their middle course.
Some things are best mended by a break.
There are two ways of spreading light: to be the candle or the mirror that reflects it.
One can remain alive. . . if one is unafraid of change, insatiable in intellectual curiosity interested in big things and happy in small ways.
Nothing is more perplexing to a man than the mental process of a woman who reasons her emotions.
Half the trouble in life is caused by pretending there isn't any.
whatever the uses of a room, they are seriously interfered with if it be not preserved as a world by itself.
In physics, your solution should convince a reasonable person. In math, you have to convince a person who's trying to make trouble. Ultimately, in physics, you're hoping to convince Nature. And I've found Nature to be pretty reasonable.
I think there is something a little too self conscious about enjoying being an outsider.
Books have the same enemies as people: fire, humidity, animals, weather, and their own content.
Every one minute you spend in planning will save you at least three minutes in execution.