“The solution of the problem of life is life itself. Life is not attained by reason and analysis but first of all by living.”

Transform Your Life: A Blissful Journey (2001)

1900s, Address at the Prize Day Exercises at Groton School (1904)
Context: Of course, the worst of all lives is the vicious life; the life of a man who becomes a positive addition to the forces of evil in a community. Next to that and when I am speaking to people who, by birth and training and standing, ought to amount to a great deal, I have a right to say only second to it in criminality comes the life of mere vapid ease, the ignoble life of a man who desires nothing from his years but that they shall be led with the least effort, the least trouble, the greatest amount of physical enjoyment or intellectual enjoyment of a mere dilettante type. The life that is worth living, and the only life that is worth living, is the life of effort, the life of effort to attain what is worth striving for.

pg 8
Source: The Unbearable Lightness of Being (1984), Part One: Lightness and Weight

Jane Sinnett, trans 1846 p.94
The Vocation of Man (1800), Faith

The Tragic Sense of Life (1913), VI : In the Depths of the Abyss
Context: To all this, someone is sure to object that life ought to subject itself to reason, to which we will reply that nobody ought to do what he is unable to do, and life cannot subject itself to reason. "Ought, therefore can," some Kantian will retort. To which we shall demur: "Cannot, therefore ought not." And life cannot submit itself to reason, because the end of life is living and not understanding.

2000

Source: Silverthorn

Source: Striking Thoughts (2000), p. 3

Lecture XXX, Atheism alone a Positive View <br class="br"> Lectures on the Essence of Religion http://www.marxists.org/reference/archive/feuerbach/works/lectures/index.htm (1851)