The only fence against the world is a thorough knowledge of it. – John Locke
If by gaining knowledge we destroy our health, we labour for a thing that will be useless in our hands. – John Locke

The only fence against the world is a thorough knowledge of it. – John Locke
If by gaining knowledge we destroy our health, we labour for a thing that will be useless in our hands. – John Locke
All mankind… being all equal and independent, no one ought to harm another in his life, health, liberty or possessions. – John Locke
To love our neighbor as ourselves is such a truth for regulating human society, that by that alone one might determine all the cases in social morality. – John Locke