He should try to remember the inner and outer conditions under which the glimpse came to him and, temporarily, try to make them again part of himself and his surroundings. He is to do so as if he were an actor appearing in this part on a stage. For the time being, he must think, feel, and live as if the experience is really happening, the glimpse really recurring. For the time being he must enter the world of imagination and copy the remembered details, the treasured impressions, as specifically as he can. The image which his past supplies is to be transferred to his present, brought to life again and reincarnated afresh. If he is unable to achieve such similarity at the first trial, this need not deter him from making a third, a seventh, and a twentieth trial on later days.
-- Notebooks Category 23: Advanced Contemplation > Chapter 6: Advanced Meditation > # 201