One might ask, what profit do we derive from this? If it is profitable to rest at night after a whole day's work, so it is profitable to turn one's mind from this world of variety in order to rest it and to give it another experience which belongs to it, which is its own and which it needs. It is this experience which is attained by the meditative process. A person who is able to think but not able to forget, a person who is able to speak but not able to keep silent, a person who is able to move but not able to keep still, a person who is able to cry but not able to laugh - that person does not know mastery. It is like having one hand, it is like standing on one foot. To have complete experience of life one must be able to act and to be still, one must be able to talk and to keep silent.