Effort Quotes - Page 10
Gene Kranz (2009). “Failure Is Not an Option: Mission Control From Mercury to Apollo 13 and Beyond”, p.393, Simon and Schuster
"The Design of Everyday Things". Book by Don Norman, ch. 6, 1988.
Andrew Weil (2011). “Spontaneous Happiness: Step-by-step to peak emotional wellbeing”, p.42, Hachette UK
We forget that every good that is worth possessing must be paid for in strokes of daily effort.
William James (1983). “Talks to Teachers on Psychology and to Students on Some of Life's Ideals”, p.51, Harvard University Press
"Applied Analysis" by Cornelius Lanczos, Prentice-Hall, 1956.