The true savage is a slave, and is always talking about what he must do; the true civilised man is a free man, and is always talking about what he may do.
There is nothing training cannot do. Nothing is above its reach. It can turn bad morals to good; it can destroy bad principles and recreate good ones; it can lift men to angelship.
Boyhood is a most complex and incomprehensible thing. Even when one has been through it, one does not understand what it was. A man can never quite understand a boy, even when he has been the boy.
There is in the world only the choice between loneliness and vulgarity. All young people should be taught now to put up with loneliness ... because the less man is compelled to come into contact with others, the better off he is.
A man got up [after one of Huxley's 'sermons'] and said 'they had never heard anything like that in Norwich before'. Never 'did Science seem so vast and mere creeds so little'.
We call the one side [of humanity] religion, and we call the other science. Religion is always right. ... Science is always wrong; it is the very artifice of men. Science can never solve one problem without raising ten more problems.