A task becomes a duty from the moment you suspect it to be an essential part of that integrity which alone entitles a man to assume responsibility. Dag Hammarskjöld
Mere parsimony is not economy. Expense, and great expense, may be an essential part in true economy. Edmund Burke
The capacity of indignation makes an essential part of the outfit of every honest man. James Russell Lowell
Anecdotal data is not incidental to theory development at all, but an essential part of it. Henry Mintzberg
Nothing brings me more happiness than trying to help the most vulnerable people in society. It is a goal and an essential part of my life - a kind of destiny. Whoever is in distress can call on me. I will come running wherever they are. Diana, Princess of Wales
I see, these books are probably law books, and it is an essential part of the justice dispensed here that you should be condemned not only in innocence but also in ignorance. Franz Kafka