garion saw now as clearly as if he were reading in that book of the heavens which guided the seers that the time of the meeting and of the choice was not only this particular day , but would come in a specific instant of this day , and if cyradis , bowed down by her unbearable grief , were unable to choose in that instant , all that had been all that was , and all that was yet to be would shimmer and vanish like an ephemeral dream .