The first answer tells us that the most important time is now, and that it’s the only time over which we’ve got power. I agree with it in some measure. The present is what we all live in, it’s the state we are in, the person we represent altogether with our ideas, beliefs, feelings and suppositions. The author writes that the present is the only time over which we’ve got power because our present is the result of our past. But the future will be the result of our present. Consequently it means we have power over future, too, because it’s the result of our present!