It reeks of paradox. The only way you can do anything of value is to have the effort come out of non-doing and to let go of caring whether it will be of use or not. Otherwise self-involvement and greediness sneak in and distort your relationship to the work, or the work itself, so that it is off in some way, biased, impure, and ultimately not completely satisfying, even if it is good. Good scientists (and artists) know this mind state and guard against it because it inhibits the creative process and distorts one’s ability to see connections clearly.
— Jon Kabat-Zinn