When you make a mistake, don't look back at it long. Take the reason of the thing into your mind, and then look forward. Mistakes are lessons of wisdom. The past cannot be changed. the future is yet in your power.

Common opinions often conflict with common sense; for reason in most minds is no match for prejudices, a hydra whose heads grow faster than they can be cut off.

Freedom springs from within, whether in a man or in a people. To remove disabilities and confer the franchise is not enough. Men must be enabled to grow if they are to exercise their rights with dignity and effect. For this reason the widening of the franchise in democratic countries has always been accompanied or followed by the development of popular education.

There is a single reason why 99 out of 100 average business men never become leaders. That is their unwillingness to pay the price of responsibility. By the price of responsibility I mean hard driving, continual work... the courage to make decisions, to stand the gaff... the scourging honesty of never fooling yourself about yourself... And the grooves that lead to the heights are not made between nine and five. They are burned in by the midnight oil.

The reason why we have two ears and only one mouth is that we may listen the more and talk the less.

Congress is a very unrepresentative institution. Not only from an economic class point of view, but from every point of view - sex, race, age, vocation... These men in Congress don’t represent a homogeneous point of view. They represent their own point of view - by reason of their sex, background and class.

One reason why men and women lose their heads so often is that they use them so little!... The more the mind is used the more flexible it becomes, and the more it takes upon itself new interests.

Man is a creature of impulse, emotion, action rather than reason. Reason is a very late development in the world of living creatures, most of whom, as far as we know, get along admirably in daily life without it.

The whole secret of remaining young in spite of years, and even of gray hairs, is to cherish enthusiasm in oneself, by poetry, by contemplation, by charity, - that is, in fewer words, the maintenance of harmony in the soul. When everything is in its right place within us, we ourselves are in its right place within us, we ourselves are in equilibrium with the whole work of God. Deep and grave enthusiasm for the eternal beauty and the eternal order, reason touched with emotion and a serene tenderness of heart - these surely are the foundations of wisdom.

Never let the future disturb you. You will meet it, if you have to, with the same weapons of reason which today arm you against the present.

One universe made up of all that is; and one God in it all, and one principle of being, and one law, the reason shared by all thinking creatures, and one truth.

This is a property of the rational soul, love of one’s neighbor, and truth and modesty, and to value nothing more than itself, which is also the property of Law. Thus then right reason differs not at all from the reason of justice.

Art is right reason in doing of work.

A time will come when the science of destruction shall bend before the arts of peace; when the genius which multiplies our powers, which creates new products, which diffuses comfort and happiness among the great mass of the people, shall occupy in the general estimation of mankind that rank which reason and common sense now assign to it.

The reason so few good books are written is that so few people who can write know something.

It is easier to be a lover that a husband for the simpler reason that it is more difficult to be witty every day that to say pretty things from time to time.

Common sense is nature’s gift, but reason is an art.

We look at change but we do not see it. We speak of change, but we do not think about it. We say that change exists, that everything changes, that change is the very law of things: yes, we say it and we repeat it; but those are only words, and we reason and philosophize as though change did not exist.

Habits - the only reason they persist is that they are offering some satisfaction. You allow them to persist by not seeking any other, better form of satisfying the same needs. Every habit, good or bad, is acquired and learned in the same way - by finding that it is a means of satisfaction.

Be ready always to give an answer to every man that asketh you a reason of the hope that is in you.