The sovereign invigorator of the body is exercise, and of all the exercises walking is the best.
— Thomas Jefferson

The sweltering summer of the Negro's legitimate discontent will not pass until there is an invigorating autumn of freedom and equality.
Martin Luther King, Jr. invigorating quote

The arts and inventions of each period are only its costume, and do not invigorate men.
— Ralph Waldo Emerson

The generative energy, which, when we are loose, dissipates and makes us unclean, when we are continent invigorates and inspires us. Chastity is the flowering of man; and what are called Genius, Heroism, Holiness, and the like, are but various fruits which succeed it.
— Henry David Thoreau

It is easy and dismally enervating to think of opposition as merely perverse or actually evil -- far more invigorating to see it as essential for honing the mind, and as a positive good in itself. For the day that moral issues cease to be fought over is the day the word human disappears from the race.
— invigorating quotation by Jill Tweedie