I am just learning to notice the different colors of the stars, and already begin to have a new enjoyment.

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

I would as soon put a girl alone into a closet to meditate as give her only the society of her needle.

The love of one's own sex is precious, for it is neither provoked by vanity nor retained by flattery; it is genuine and sincere.

I saw, in looking over Cooper, elements of a comet of 1825 which resemble what I get out for this, from my own observations, but I cannot rely upon my own.

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.

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.