I value myself not when I do what is called the commanding duty of this Monday or Tuesday, but when I leave it to do the duty of a remote day, as, for instance,

I value myself not when I do what is called the commanding duty of this Monday or Tuesday, but when I leave it to do the duty of a remote day, as, for instance, to write a line, or find a new fact, a missing link, in my Essay on "Memory" or on "Imagination". - Emerson, journals, ~1858, Vol 14 p15.