Friendship requires leisure. This fine cultural form cannot survive without the time and leisure that are its lifeblood. I love the East Indian custom of standing next to someone in silence, probably just a step in back of him or her, if you wish to make friends. Silence, waiting, time, respect for another's space–these are the elements of friendship.
~from LYING WITH THE HEAVENLY WOMAN by Robert A Johnson
Time is not a line but a dimension, like the dimensions of space. If you can bend space you bend time also, and if you knew enough and could move faster than light, you could travel backward in time and exist in two places at once.