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.
Our imagination is larger than the world around us; we go beyond our limits. This used to be called 'witchcraft,' but fortunately things have changed, otherwise we would both already have been burned at the stake. When they stopped burning women, science found an explanation for our behavior, normally referred to as 'female hysteria.' We don't get burned anymore, but it does cause problems, especially in the workplace. But don't worry, eventually they'll call it 'wisdom.'
I have fallen in love with the imagination. And if you fall in love with the imagination, you understand that it is a free spirit. It will go anywhere, and it can do anything.
Imagination builds the image of the self, and thought then functions within its shadows. From this self-concept grows the conflict between what is and what should be, the conflict in duality.