Persons of genius, it is true, are, and are always likely to be, a small minority; but in order to have them, it is necessary to preserve the soil in which they grow.
Interpretation
Genius thrives in a nurturing environment, which is essential for creative individuals to flourish.
In this quote, John Stuart Mill emphasizes the importance of creating and maintaining an environment that supports and cultivates genius. While individuals of exceptional talent may always be few in number, their development is contingent upon the presence of a healthy and supportive 'soil'. This metaphor suggests that society must provide the right conditions—such as education, encouragement, and freedom—to allow creative minds to thrive.
In practice
In a speech about educational reform, one might quote Mill to highlight the need for nurturing talent.
The peculiar evil of silencing the expression of an opinion is, that it is robbing the human race; posterity as well as the existing generation; those who dissent from the opinion, still more than those who hold it. If the opinion is right, they are deprived of the opportunity of exchanging error for truth: if wrong, they lose, what is almost as great a benefit, the clearer perception and livelier impression of truth, produced by its collision with error.
As for charity, it is a matter in which the immediate effect on the persons directly concerned, and the ultimate consequence to the general good, are apt to be at complete war with one another.
To think that because those who wield power in society wield in the end that of government, therefore it is of no use to attempt to influence the constitution of the government by acting on opinion, is to forget that opinion is itself one of the greatest active social forces. One person with a belief is a social power equal to ninety-nine who have only interests.
There should be perfect freedom, legal and social, to do the action and stand the consequences. It would be a great misunderstanding of this doctrine to suppose that it is one of selfish indifference, which pretends that human beings have no business with each other's conduct in life, and that they should not concern themselves about the well-doing or well-being of one another, unless their own interest is involved.
Political Economy, in truth, has never pretended to give advice to mankind with no lights but its own; though people who knew nothing but political economy (and therefore knew it ill) have taken upon themselves to advise, and could only do so by such lights as they had.
Marriage is the only actual bondage known to our law. There remain no legal slaves, except the mistress of every house.
To practice five things under all circumstances constitutes perfect virtue; these five are gravity, generosity of soul, sincerity, earnestness, and kindness.
Keep looking below surface appearances. Don't shrink from doing so just because you might not like what you find.
Miracles, contrary to popular belief, do not just happen. A miracle is the achievement of the impossible, and it is only when we put aside out greed, anger, pride and prejudice so that our minds are open and ready to accept it, that a miracle can occur.
To acquire knowledge, one must study; but to acquire wisdom, one must observe.
Once you've learned to think you can't stop. And an enormous number of people devote their lives to keeping their minds busy and feel extremely uncomfortable with silence.
I have great respect for the semicolon; it is a mighty handy little fellow.
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