and when their ears have attuned to your voice , when you stand invited in the dream of their heart , then tell them that this , the smallest of beings , he who has made their hearts his home , he who takes up no space , yet fills the universe , tell them that this little self , whether the size of a thumb or the size of a mountain , he who whether they know it or not is always enshrined in every heart , tell them that this smokeless flame , ruler of time , past and future , the same today as tomorrow , is the real self indeed .