Jerome K. Jerome (Three Men In A Boat)
It is very strange, this domination of our intellect by our digestive organs. We cannot work, we cannot think, unless our stomachs will do so. It dictates to us our emotions, our passions. After eggs and bacon, it works! After beefsteak and porter, it says 

sleep! After a cup of tea (two spoonsful for each cup, and don't let it stand for more than three minutes), it says to the brain, now rise and show your strength. Be eloquent and deep and tender; see, with a clear eye into nature and into life; spread your white wings of quivering thought, and soar, a god-like spirit, over the whirling world beneath you and up through long lanes of flaming stares to the gates of eternity!