Authors:

One must never have spared oneself, one must have acquired hardness as a habit to be cheerful and in good spirits in the midst of nothing but hard truths.

Friedrich Nietzsche (2009). “Basic Writings of Nietzsche”, p.720, Modern Library
One must never have spared oneself, one must have acquired hardness as a habit to be cheerful and in good spirits in the midst of nothing but hard truths.