If the word has the potency to revive and make us free, it has also the power to blind, imprison, and destroy.
— Ralph Ellison

Power is the faculty or capacity to act, the strength and potency to accomplish something. It is the vital energy to make choices and decisions. It also includes the capacity to overcome deeply embedded habits and to cultivate higher, more effective ones.
Stephen Covey potency quote

The Word is the master key for the whole world, inasmuch as through its potency the doors of the hearts of men, which in reality are the doors of heaven, are unlocked.
— Baha'u'llah

You were a lord if you had a horse...Far back, far back in our dark soul the horse prances. . . . The horse, the horse! The symbol of surging potency and power of movement, of action, in man.
— D. H. Lawrence

If, Sir, I possessed the power of conveying unlimited sexual attraction through the potency of my voice, I would not be reduced to accepting a miserable pittance from the BBC for interviewing a faded female in a damp basement.
— potency quotation by Gilbert Harding