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

Women, more than men, are bound by tradition and authority. What the father, the brother, the doctor, and the minister have said has been received undoubtingly. Until women throw off this reverence for authority they will not develop.

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.

We have a hunger of the mind which asks for knowledge of all around us, and the more we gain, the more is our desire; the more we see, the more we are capable of seeing.

Small aids to individuals, large aid to masses.

There is no cosmetic for beauty like happiness.

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