Randolph M. Nesse:

"As we plan, fantasize, dream, imagine, emotions nudge us toward some paths and away from others."

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"The big news in emotions research is that emotions arise from the "appraisals" people make about the personal significance of information."

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"People prone to intense emotions experience enthusiasms that shift their efforts from one unfinished project to another ..."

"People who hardly experience emotion neither take full advantage of opportunities nor fully protect themselves from threats."