“Adversity is the first path to truth.”

"Fifth Talk in Bombay 1950 (12 March 1950) http://www.jkrishnamurti.com/krishnamurti-teachings/view-text.php?tid=352&chid=4672&w=%22Truth+is+not+something+in+the+distance%22, J.Krishnamurti Online, JKO Serial No. 500312, The Collected Works, Vol. VI, p. 134
Posthumous publications, The Collected Works
Context: Truth is not something in the distance; there is no path to it, there is neither your path nor my path; there is no devotional path, there is no path of knowledge or path of action, because truth has no path to it. The moment you have a path to truth, you divide it, because the path is exclusive; and what is exclusive at the very beginning will end in exclusiveness. The man who is following a path can never know truth because he is living in exclusiveness; his means are exclusive, and the means are the end, are not separate from the end. If the means are exclusive, the end is also exclusive. So there is no path to truth, and there are not two truths. Truth is not of the past or the present, it is timeless; the man who quotes the truth of the Buddha, of Shankara, of Christ, or who merely repeats what I am saying, will not find truth, because repetition is not truth. Repetition is a lie.

3
73 poems (1963)

This statement probably derives from a famous one of Jiddu Krishnamurti: "Truth is a pathless land."
Tao of Jeet Kune Do (1975)
Context: Truth has no path. Truth is living and, therefore, changing. Awareness is without choice, without demand, without anxiety; in that state of mind, there is perception. To know oneself is to study oneself in action with another person. Awareness has no frontier; it is giving of your whole being, without exclusion.

Al-Tirmidhi, Hadith 730
Sunni Hadith

Address to students, quoted in Abraham Flexner, Henry S. Pritchett: A Biography (Columbia University Press, 1943; University of Virginia digitization, May 2, 2008, 211 pages), p. 192

Buddhist Socteriological Ethics: A Study of the Buddha’s Central Teachings (1999)