“Women should be tough, tender, laugh as much as possible, and live long lives.”

Source: The Long Song

As quoted in Infidels and Heretics : An Agnostic's Anthology (1929) edited by Clarence Darrow and Wallace Rice, pp. 206 - 207
Context: The purpose of life is living. Men and women should get the most they can out of their lives. The smallest, tiniest intellect may be quite as valuable to society as the largest. It may be still more valuable to itself: it may have all the capacity for enjoyment that the wisest has. The purpose of man is like the purpose of the pollywog — to wriggle along as far as he can without dying; or to hang on until death takes him.

Source: 1960s, Strength to Love (1963), Ch. 1 : A tough mind and a tender heart
Context: Jesus recognized the need for blending opposites. He knew that his disciples would face a difficult and hostile world, where they would confront the recalcitrance of political officials and the intransigence of the protectors of the old order. He knew that they would meet cold and arrogant men whose hearts had been hardened by the long winter of traditionalism. … And he gave them a formula for action, "Be ye therefore as wise as serpents, and harmless as doves." … We must combine the toughness of the serpent with the softness of the dove, a tough mind and a tender heart.

Source: Mrs. Dalloway

Source: The Gift of Fear: Survival Signals That Protect Us from Violence

Second Week, Fourth Day, Book ii. Compare: " A life spent worthily should be measured by a nobler line,—by deeds, not years", Richard Brinsley Sheridan, Pizarro, Act iv, Scene 1.
La Seconde Semaine (1584)