“Being good is just a matter of temperament in the end.”

Source: Hainish Cycle, The Left Hand of Darkness (1969), Chapter 15 “To the Ice” (p. 220)

The Left Hand of Darkness (1969) by Ursula K. Le Guin, in Chapter 15 "To the Ice"
See also https://www.huffpost.com/entry/hemingways-stolen-quotati_b_6868994.
Misattributed
Variant: It is good to have an end to a journey, but it is the journey that matters, in the end.

Source: Reflections and Maxims (1746), p. 176.

2010s, 2016, October, Second presidential debate (October 9, 2016)

The Artist Speaks (1951)

Non-Virgin...a Lexical Gap? http://www.youtube.com/watch?v=5LpHfPOM6GQ&feature=related
Youtube

Small Houses: Their Economic Design and Construction (1922)

Source: Man for Himself (1947), Ch. 3
Context: Temperament refers to the mode of reaction and is constitutional and not changeable; character is essentially formed by a person’s experiences, especially of those in early life, and changeable, to some extent, by insights and new kinds of experiences. If a person has a choleric temperament, for instance, his mode of reaction is "quick and strong.” But what he is quick or strong about depends on his kind of relatedness, his character. If he is a productive, just, loving person he will react quickly and strongly when he loves, when he is enraged by injustice, and when he is impressed by a new idea. If he is a destructive or sadistic character, he will be quick and strong in his destructiveness or in his cruelty. The confusion between temperament and character has had serious consequences for ethical theory. Preferences with regard to differences in temperament are mere matters of subjective taste. But differences in character are ethically of the most fundamental importance.

Source: Lisey's Story