The culture of the mind has five different aspects. First, thought and imagination. Thought is one thing, and imagination is another. Very often people confuse these two words. Thinking is an automatic action of mind, there is no will-power behind it. Therefore the dream is an imagination; only it is called a dream because it is more concrete; when a person is asleep and the senses are closed there is nothing but the imagination before the mind. But in the case of imagination in the waking state there is on one side imagination and on the other side the action of the five senses, and then imagination plays a passive part.