Accident, Design and Memory
It is right to say either that heredity and memory are one and the same thing, or that heredity is a mode of memory, or that heredity is due to memory, if it is thereby intended that animals can only grow in virtue of being able to recollect. Memory and heredity are the means of preserving experiences, of building them together, of uniting a mass of often confused detail into homogeneous and consistent mind and matter, but they do not originate. The increment in each generation, at the moment of its being an increment, has nothing to do with memory or heredity, it is due to the chances and changes of this mortal state. Design comes in at the moment that a living being either feels a want and forecasts for its gratification, or utilises some waif or stray of accident on the principle, which underlies all development, that enough is a little more than what one has. It is the business of memory and heredity to conserve and to transmit from one generation to another that which has been furnished by design, or by accident designedly turned to account.
It is therefore not right to say, as some have supposed me to mean, that we can do nothing which we do not remember to have done before. We can do nothing very difficult or complicated which we have not done before, unless as by a tour de force, once in a way, under exceptionally favourable circumstances, but our whole conscious life is the performance of acts either imperfectly remembered or not remembered at all. There are rain-drops of new experiences in every life which are not within the hold of our memory or past experience, and, as each one of these rain-drops came originally from something outside, the whole river of our life has in its inception nothing to do with memory, though it is only through memory that the rain-drops of new experience can ever unite to form a full flowing river of variously organised life and intelligence.