Experience is a wonderful thing. It enables you to recognize a mistake when you make it again. If all economists were laid end to end they would not reach a conclusion.
You can be a thorough-going Neo-Darwinian without imagination, metaphysics, poetry, conscience, or decency. For 'Natural Selection' has no moral significance: it deals with that part of evolution which has no purpose, no intelligence, and might more appropriately be called accidental selection, or better still, Unnatural Selection, since nothing is more unnatural than an accident. If it could be proved that the whole universe had been produced by such Selection, only fools and rascals could bear to live.
I have always held the religion of Muhammad in high estimation because of its wonderful vitality. It is the only religion which appears to me to possess that assimilating capability to the changing phase of existence which can make itself appeal to every age... I have studied him - the wonderful man, and in my opinion far from being an Anti-Christ he must be called the Saviour of Humanity.
What is self-control? It is nothing but a highly developed vital sense, dominating and regulating the mere appetites. To overlook the very existence of this supreme sense; to miss the obvious inference that it is the quality that distinguishes the fittest to survive.
You do not settle whether an argument is justified by merely showing that it is of some use. The distinction is not between useful and useless experiments but between barbarous and civilized behaviour. Vivisection is a social evil because if it advances human knowledge, it does so at the expense of human character.