own "blocks." If one is alert and attentive, he can see for example that whenever certain questions arise, there are fleeting sensations of fear, which push him away from consideration of these questions, and of pleasure, which attract his thoughts and cause them to be occupied with other questions. So one is able to keep away from whatever it is that he thinks may disturb him. And as a result, he can be subtly defending his own ideas, when he supposes that he is really listening to what other people have to say. When we come together to talk, or otherwise to act in common, can each one
