“The body tries to stop the mind from killing itself, no matter the cost. It is only the lack of strength, the fatigue that lets the jumpers fall at last.”

“The most critical time in any battle is not when I’m fatigued, it’s when I no longer care.”

“Fatigue is here, in my body, in my legs and eyes. That is what gets you in the end. Faith is only a word, embroidered.”

“There is no royal road to science, and only those who do not dread the fatiguing climb of its steep paths have a chance of gaining its luminous summits.”