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.

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.

We especially need imagination in science.

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.

Altogether, St. Louis is a growing place, and the West has a large hand and a strong grasp.

People have to learn sometimes not only how much the heart, but how much the head, can bear.

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.

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

Question everything.

That knowledge which is popular is not scientific.

I had, early in life, a love for staging, but it is fast dying out. Nine hours over a rough road are enough to root out the most passionate love of that kind.

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

Small aids to individuals, large aid to masses.

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

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

I am just through with a summer, and a summer is to me always a trying ordeal.

The best that can be said of my life so far is that it has been industrious, and the best that can be said of me is that I have not pretended to what I was not.

I was born, for instance, incapable of appreciating music.

There is no cosmetic for beauty like happiness.

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 think, catch some inspiration from heights above our own.

I have never been in any country where they did not do something better than we do it, think some thoughts better than we think, catch some inspiration from heights above our own.

I have worn myself thin trying to find out about this comet, and I know very little now in the matter.

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.

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.

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.

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

The world of learning is so broad, and the human soul is so limited in power!

A young sailor boy came to see me today. It pleases me to have these lads seek me on their return from their first voyage, and tell me how much they have learned about navigation.

The Southern character is opposed to haste. Safety is of more worth than speed, and there is no hurry.

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

I am always the better for open-air breathing, and was certainly meant for the wandering life of the Indian.

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.

Study as if you were going to live forever; live as if you were going to die tomorrow.

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

I have just gone over my comet computations again, and it is humiliating to perceive how very little more I know than I did seven years ago when I first did this kind of work.

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

People have to learn sometimes not only how much the heart but how much the head can bear.

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.

A team is where a boy can prove his courage on his own. A gang is where a coward goes to hide.

Courage enlarges, cowardice diminishes resources. In desperate straits the fears of the timid aggravate the dangers that imperil the brave.

I know that if I'd had to go and take an exam for acting, I wouldn't have got anywhere. You don't take exams for acting, you take your courage.

Necessity does the work of courage.

Courage is not the absence of despair; it is, rather, the capacity to move ahead in spite of despair.

More firm and sure the hand of courage strikes, when it obeys the watchful eye of caution.

The last thing a woman will consent to discover in a man whom she loves, or on whom she simply depends, is want of courage.

There has to be this pioneer, the individual who has the courage, the ambition to overcome the obstacles that always develop when one tries to do something worthwhile, especially when it is new and different.

The kind of beauty I want most is the hard-to-get kind that comes from within - strength, courage, dignity.

Ronald Reagan's well documented final battles with Alzheimer's disease were fought with the same conviction and courage that his many public battles were fought.

On sensitive issues, talk isn't cheap - it takes real courage to pry open topics nailed shut.