Page:An Enquiry Concerning the Principles of Natural Knowledge.djvu/214

200 for subtler rhythms is very close. So far as direct observation is concerned all that we know of the essential relations of life in nature is stated in two short poetic phrases. The obvious aspect by Tennyson,

“Blow, bugle, blow, set the wild echoes flying, And answer, echoes, answer, dying, dying, dying.”

Namely, Bergson’s élan vital and its relapse into matter.

And Wordsworth with more depth,

“The music in my heart I bore, Long after it was heard no more.”