Related:

• The appearance of things to the mind is the standard of every action to man.
  -- Epictetus (c. 60 AD) -- That we ought not to be angry with Mankind, -- Discourses, Book i, Chap....
• The materials of action are variable, but the use we make of them should be constant.
  -- Epictetus (c. 60 AD) -- How Nobleness of Mind may be consistent with Prudence, -- Discourses, Book ii, Chap....
• In theory there is nothing to hinder our following what we are taugh
  but in life there are many things to draw us aside....
• Dare to look up to God and say, "Make use of me for the future as Thou wilt.
  I am of the same mind; I am one with Thee. I refuse nothing which seems good to Thee....
• The essence of good and evil is a certain disposition of the will.
  -- Epictetus (c. 60 AD) -- Of Courage, -- Discourses, Book i, Chap. xxix...
• If we are not stupid or insincere when we say that the good or ill of man lies within his own will, and that all beside is nothing to us, why are we still troubled?
  -- Epictetus (c. 60 AD) -- Discourses, Book i, Chap. xxv...
• Let not another's disobedience to Nature become an ill to you
  for you were not born to be depressed and unhappy with others, but to be happy with them....
• In every affair consider what precedes and what follows, and then undertake it.
  -- Epictetus (c. 60 AD) -- That Everything is to be undertaken with Circumspection, -- Discourses, Book iii, Chap....
• First say to yourself what you would be; and then do what you have to do.
  -- Epictetus (c. 60 AD) -- Concerning such as read and dispute ostentatiously, -- Discourses, Book iii, Chap....