“…in childhood we have used up too much strength, too much grown-people’s strength, — that may be true for a whole generation.  Or true over and over again for individuals.  What shall one say about it?  That life has unending possibilities of renewal.  Yes, but this too: that the using of strength in a certain sense is always increase of strength also; for fundamentally we have to do only with a wide cycle: all strength that we give away comes, experienced and altered, over us again.  Thus it is in prayer.  And what is there, truly done, that is not prayer?”

This from a letter of R. M. Rilke’s.