He who lives in the single exercise of his mental faculties, however usefully or curiously directed, is equally an imperfect animal with the man who knows only the exercise of muscles.

But while human liberty has engaged the attention of the enlightened, and enlisted the feelings of the generous of all civilized nations, may we not enquire if this liberty has been rightly understood?

He who lives in the single exercise of his mental faculties, however usefully or curiously directed, is equally an imperfect animal with the man who knows only the exercise of muscles.

The hired preachers of all sects, creeds, and religions, never do, and never can, teach any thing but what is in conformity with the opinions of those who pay them.

Know why you believe, understand what you believe, and possess a reason for the faith that is in you.

Now here is a departure from the first principle of true ethics. Here we find ideas of moral wrong and moral right associated with something else than beneficial action. The consequent is, we lose sight of the real basis of morals, and substitute a false one.

And when did mere preaching do any good? Put something in the place of these things. Fill the vacuum of the mind.

It will appear evident upon attentive consideration that equality of intellectual and physical advantages is the only sure foundation of liberty, and that such equality may best, and perhaps only, be obtained by a union of interests and cooperation in labor.

Speak of change, and the world is in alarm. And yet where do we not see change?

We have seen that no religion stands on the basis of things known; none bounds its horizon within the field of human observation; and, therefore, as it can never present us with indisputable facts, so must it ever be at once a source of error and contention.

Our religious belief usurps the place of our sensations, our imaginations of our judgment. We no longer look to actions, trace their consequences, and then deduce the rule; we first make the rule, and then, right or wrong, force the action to square with it.

Man has been adjudged a social animal.

Surely it is time to examine into the meaning of words and the nature of things, and to arrive at simple facts, not received upon the dictum of learned authorities, but upon attentive personal observation of what is passing around us.

The existing principle of selfish interest and competition has been carried to its extreme point; and, in its progress, has isolated the heart of man, blunted the edge of his finest sensibilities, and annihilated all his most generous impulses and sympathies.

Look into the nature of things. Search out the grounds of your opinions, the for and against.

The simplest principles become difficult of practice, when habits, formed in error, have been fixed by time, and the simplest truths hard to receive when prejudice has warped the mind.

We hear of the wealth of nations, of the powers of production, of the demand and supply of markets, and we forget that these words mean no more, if they mean any thing, then the happiness, and the labor, and the necessities of men.

Instead of establishing facts, we have to overthrow errors; instead of ascertaining what is, we have to chase from our imaginations what is not.

Awaken its powers, and it will respect itself.

A necessary consequent of religious belief is the attaching ideas of merit to that belief, and of demerit to its absence.

Who speaks of liberty while the human mind is in chains

The essential elements of giving are power and love - activity and affection - and the consciousness of the race testifies that in the high and appropriate exercise of these is a blessedness greater than any other.

In fact, it is a farce to call any being virtuous whose virtues do not result from the exercise of its own reason.

To enable men to exercise that power is the object of protection.

We in this Congress have a choice. The American people have a right to exercise a choice on this issue, as to whether our men and women will continue to fight and die in a war based on deception and fantasy, or to start bringing the troops home.

The test and the use of man's education is that he finds pleasure in the exercise of his mind.

But you can't exercise and be high. It's impossible.

Make them laugh, make them cry, and hack to laughter. What do people go to the theatre for? An emotional exercise. I am a servant of the people. I have never forgotten that.

Exercise should be regarded as tribute to the heart.

They actually bought me for Daredevil 2, but they have to exercise the option.

I like exercise. I like a healthy body.

We exercise great caution in airing an audio- or videotape released by a terrorist organization holding a hostage. These are decisions made by CNN's editorial staff and not by any third party.

But to be the Vicar of Christ, to claim to exercise his prerogatives on earth, does involve a claim to his attributes, and therefore our opposition to Popery is opposition to a man claiming to be God.

There is no age, height, or weight requirement to skate. It is good exercise no matter what your age is. If you want to be competitive, most start young. But, I practice with many adult competitors.

But I work harder now because I have so much more exposure. And actually the harder you work as a writer, the better you get at it. It's like anything else. It's a muscle you have to exercise. I write more now than ever.

I think that making love is the best form of exercise.

Many difficulties which nature throws in our way, may be smoothed away by the exercise of intelligence.

I do it as a therapy. I do it as something to keep me alive. We all need a little discipline. Exercise is my discipline.

Like most people I can be lazy, so it's nice to have a goal or deadline or reason to work out. I feel better when I get to exercise, or when I'm outdoors. I like to hike, swim and run, and I love to play soccer.

In general, any form of exercise, if pursued continuously, will help train us in perseverance. Long-distance running is particularly good training in perseverance.

Fantasy is an exercise bicycle for the mind. It might not take you anywhere, but it tones up the muscles that can. Of course, I could be wrong.

Exercise is the chief source of improvement in our faculties.

I think in the wake of Katrina, the Coast Guard may well have been the only entity or agency that came out of that exercise free of fault and free of blame.

Yes, exercise is the catalyst. That's what makes everything happen: your digestion, your elimination, your sex life, your skin, hair, everything about you depends on circulation. And how do you increase circulation?

Exercise is really important to me - it's therapeutic. So if I'm ever feeling tense or stressed or like I'm about to have a meltdown, I'll put on my iPod and head to the gym or out on a bike ride along Lake Michigan with the girls.

Exercise is labor without weariness.

Exercise? I get it on the golf course. When I see my friends collapse, I run for the paramedics.

It is a good morning exercise for a research scientist to discard a pet hypothesis every day before breakfast. It keeps him young.

He who lives in the single exercise of his mental faculties, however usefully or curiously directed, is equally an imperfect animal with the man who knows only the exercise of muscles.