I made observations for three hours last night, and am almost ill today from fatigue; still I have worked all day, trying to reduce the places, and mean to work hard again tonight.

But why look back at all? Why turn your eyes to your shadow, when, by looking upward, you see your rainbow in the same direction?

Let us secure not such books as people want, but books just above their wants, and they will reach up to take what is put out for them.

It is sad to see a woman sacrificing the ties of the affections even to do good.

I was a little doubtful about the propriety of going to the Mammoth Cave without a gentleman escort, but if two ladies travel alone they must have the courage of men.

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

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.