Thomas Carlyle Quote

A man with a half volition goes backwards and forwards, and makes no way on the smoothest road; a man with a whole volition advances on the roughest, and will reach his purpose, if there be even a little worthiness in it. The man without a purpose is like a ship without a rudder - a waif, a nothing, a no man. Have a purpose in life and having it, throw such strength of mind and muscle into your work as God has given you.

Critical and miscellaneous essays, collected and republ (ed. 1840)