There is only one condition in which we can imagine managers not needing subordinates, and masters not needing slaves. This condition would be that each (inanimate) instrument could do its own work.
If you must look back, do so forgivingly. If you will look forward, do so prayerfully. But the wisest course would be to be present in the present gratefully.
We criticize a thinker more acutely when he advances a proposition that is disagreeable to us; and yet it would be more reasonableto do so when his proposition is agreeable to us.
Without birth and death, and without the perpetual transmutation of all the forms of life, the world would be static, rhythm-less, undancing, mummified.