“Purpose necessitates one has a vision into their future. Without purpose and vision, your life will resemble a windmill without wind. Devoid of wind, the windmill cannot do its job and has ceased to function.”
1973
Related quotes

Source: The Purpose Driven Life: What on Earth Am I Here For? (2002), Ch. 2 : I'm Not an Accident
Source: The Purpose Driven Life: What on Earth Am I Here for?

“And without love, your son’s purpose has no purpose.”
Source: The Boy Crisis (2018), pp. 77
“Purpose has no place in biology, but history has no meaning without it.”
Source: The Shape of Time, 1982, p. 8

Source: Humanity Comes of Age, A study of Individual and World Fulfillment (1950), Introduction p. I - XII