Through zeal knowledge is gotten, through lack of zeal knowledge is lost; let a man who knows this double path of gain and loss thus place himself that knowledge may grow.

Moderation, which consists in an indifference about little things, and in a prudent and well-proportioned zeal about things of importance, can proceed from nothing but true knowledge, which has its foundation in self-acquaintance.

At least two thirds of our miseries spring from human stupidity, human malice and those great motivators and justifiers of malice and stupidity, idealism, dogmatism and proselytizing zeal on behalf of religious or political idols.

Nothing is more unjust, however common, than to charge with hypocrisy him that expresses zeal for those virtues which he neglects to practice; since he may be sincerely convinced of the advantages of conquering his passions, without having yet obtained the victory; as a man may be confident of the advantages of a voyage or a journey, without having courage or industry to undertake it, and may honestly recommend to others those attempts which he neglects himself.

There is a wholly mistaken zeal in politics as well as in religion. By persuading others, we convince ourselves.

There is not a vice which more effectually contracts and deadens the feelings, which more completely makes a man’s affections center in himself, and excludes all others from partaking in them, than the desire of accumulating possessions. When the desire has once gotten hold of the heart, it shuts out all other considerations, but such as may promote its views. In its zeal for the attainment of its end, it is not delicate in the choice of means. As it closes the heart, so also it clouds the understanding. It cannot discern between right and wrong; it takes evil for good, and good for evil; it calls darkness light, and light darkness. Beware, then, of the beginning of covetousness, for you know not where it will end.

Violent zeal for truth has a hundred to one odds to be either petulancy, ambition, or pride.

Unless the cause of peace based on law gathers behind it the force and zeal of a religion, it hardly can hope to succeed.

We do that in our zeal our calmer moment would be afraid to answer.

If we have learned anything at all in the two thousand years of Christian history, we should have learned that few things are more dangerous than zeal without knowledge.

One is healthy when one can laugh at the earnestness and zeal with which one has been hypnotized by any single detail of one's life.

One is healthy when one can laugh at the earnestness and zeal with which one has been hypnotized by any single detail of one's life.

Mistrust your zeal for doing good to others.

Mistrust your zeal for doing good to others.

At least two thirds of our miseries spring from human stupidity, human malice, and those great motivators and justifiers of malice and stupidity, idealism, dogmatism and proselytizing zeal on behalf of religious or political idols.

At least two thirds of our miseries spring from human stupidity, human malice and those great motivators and justifiers of malice and stupidity, idealism, dogmatism and proselytizing zeal on behalf of religious or political idols.

At least two thirds of our miseries spring from human stupidity, human malice, and those great motivators and justifiers of malice and stupidity, idealism, dogmatism and proselytizing zeal on behalf of religious or political idols.

At least two thirds of our miseries spring from human stupidity, human malice and those great motivators and justifiers of malice and stupidity, idealism, dogmatism and proselytizing zeal on behalf of religious or political idols.

At least two thirds of our miseries spring from human stupidity, human malice, and those great motivators and justifiers of malice and stupidity, idealism, dogmatism and proselytizing zeal on behalf of religious or political idols.

At least two thirds of our miseries spring from human stupidity, human malice and those great motivators and justifiers of malice and stupidity, idealism, dogmatism and proselytizing zeal on behalf of religious or political idols.