We are all ready to be savage in some cause. The difference between a good man and a bad one is the choice of the cause.
Interpretation
Your choice of cause defines your morality and character.
William James suggests that everyone is capable of passionate intensity or aggression ('savage') for a cause they believe in. However, the distinction between a good person and a bad person lies in the ethical nature of the cause they choose to support, implying that our moral compass guides our actions and defines who we are.
In practice
In a lecture on ethics, I might use this quote to discuss the importance of choosing just causes.
Many persons nowadays seem to think that any conclusion must be very scientific if the arguments in favor of it are derived from twitching of frogs' legs (especially if the frogs are decapitated) and that, on the other hand, any doctrine chiefly vouched for by the feelings of human beings (with heads on their shoulders) must be benighted and superstitious.
The man who knows governments most completely is he who troubles himself least about a definition which shall give their essence. Enjoying an intimate acquaintance with all their particularities in turn, he would naturally regard an abstract conception in which these were unified as a thing more misleading than enlightening.
All the higher, more penetrating ideals are revolutionary. They present themselves far less in the guise of effects of past experience than in that of probable causes of future experience, factors to which the environment and the lessons it has so far taught us must learn to bend.
The lunatic's visions of horror are all drawn from the material of daily fact. Our civilization is founded on the shambles, and every individual existence goes out in a lonely spasm of helpless agony.
It is astonishing how many mental operations we can explain when we have once grasped the principles of association
As there is no worse lie than a truth misunderstood by those who hear it, so reasonable arguments, challenges to magnanimity, and appeals to sympathy or justice, are folly when we are dealing with human crocodiles and boa-constrictors.
Everything we call real is made of things that cannot be regarded as real.
Persons of genius are, ex vi termini, more individual than any other people - less capable, consequently, of fitting themselves, without hurtful compression, into any of the small number of moulds which society provides in order to save its members the trouble of forming their character.
In a very real sense, we are shipwrecked passengers on a doomed planet. Yet, even in a shipwreck, human decencies and human values do not necessarily vanish, and we must make the most of them. We shall go down, but let it be in a manner to which we may look forward as worthy of our dignity.
Life is a pure flame and we live by an invisible sun within us.
Not even Ares battles against necessity.
The worst sense of security is a false one. It's hard for people to wrap their heads around the idea that those in charge - federal, state and local agencies - might be cheating the system. But, all too often, that is exactly what happens.
Subscribe for the occasional hand-picked quote. No noise.