What does it mean 'always one foot on the ground'?

Question

What does it mean 'always one foot on the ground'?

Answer 1

It means your not superman and you can't fly so keep your human feet on the ground.

Answer 2

Be cautious? You never know whether your next step will be your doom.

Answer 3

I think it means that you're always grounded, you don't always have your head in the clouds. You're considered solid and logical.

Answer 4

it means you cant walk with no feet at all at least one foot has to be on the ground

it of course explains something like maybe : you cant explain a problem without logic.   meanig like hte basic of a thing to do