Doubt can only be removed by action.

He who moves not forward goes backward! A capital saying!

Progress has not followed a straight ascending line, but a spiral with rhythms of progress and retrogression, of evolution and dissolution.

A fiery chariot, borne on buoyant pinions, Sweeps near me now! I soon shall ready be To pierce the ther's high, unknown dominions, To reach new spheres of pure activity!

How can we know ourselves? Never by reflection, but only through action. Begin at once to do your duty and immediately you will know what is inside you.

Nature knows no pause in progress and development, and attaches her curse on all inaction