To read a book, to think it over, and to write out notes is a useful exercise; a book which will not repay some hard thought is not worth publishing..

The greatest object in educating is to give a right habit of study..

The greatest benefit derived from the study of science is that it lifts you out of and above the littleness of daily trials. We learn to live in the ….

I had only ordinary capacity but extraordinary persistency..

The world of learning is so broad, and the human soul is so limited in power! We reach forth and strain every nerve, but we seize only a bit of the c….

Every formula which expresses a law of nature is a hymn of praise to God..

Besides learning to see, there is another art to be learned - not to see what is not..

When we are chafed and fretted by small cares, a look at the stars will show us the littleness of our own interests..

No woman should say, "I am but a woman!" But a woman! What more can you ask to be?.

Do not look at stars as bright spots only. Try to take in the vastness of the universe..

In my younger days, when I was painted by the half-educated, loose and inaccurate ways women had, I used to say, "How much women need exact science" ….

The eye that directs a needle in the delicate meshes of embroidery will equally well bisect a star with the spiderweb of the micrometer..

A sphere is made up of not one, but an infinite number of circles; women have diverse gifts, and to say that women's sphere is the family circle is a….

For women there are, undoubtedly, great difficulties in the path, but so much the more to overcome. First, no woman should say, "I am but a woman!" B….

Why can a man not act himself, be himself, and think for himself? It seems to me that naturalness alone is power; that a borrowed word is weaker than….

We travel to learn; and I have never been in any country where they did not do something better than we do it, think some thoughts better than we thi….

Nothing comes out more clearly in astronomical observations than the immense activity of the universe..

Yesterday I had a Shaker visitor, and today a Catholic; and the more I see and hear, the less do I care about church doctrines..

We especially need imagination in science. Question everything..

As a general rule, people disappoint you as you know them..

There is something of the same pleasure in noticing the hues of the stars that there is in looking at a flower garden in autumn..