Fiction - Careful lyrics

Where is that hand? The one that kept you moving along Like a rational headed man With a rational heart And what's this? It's like a can of heat And if it blows up it will take you with it And if it goes under it will drag you down But if you hold it tight It could make you happy And all the cars would care about you But you are not mechanical And all the trees would laugh about it But you are not invisible Carefully dragging your feet Where is that thought? That perennial secret of yours Well you're keeping it hidden of course But it's never delivered But what's this? It's like a can of heat And if it blows up it will take you with it And if it goes under it'll drag you down But if you hold it tight It could make you happy And all the cars would care about you But you are not mechanical And all the trees would laugh about it But you are not invisible Carefully dragging your feet Careful cares for you When you reach the edge You may not fall asleep