You and I are not what we eat; we are what we think. – Walter Anderson, The Confidence Course, 1997

…the thoughtful excitement of lonely rambles, of gardening, and of other like occupations, where the mind has leisure to must during the healthful activity of the body, with the fresh and wakeful breezes blowing round it… – Augustus William Hare and Julius Charles Hare, Guesses at Truth, by Two Brothers

A just thinker will allow full swing to his scepticism. I dip my pen in the blackest ink, because I am not afraid of falling into my inkpot…. We are of different opinions at different hours, but we always may be said to be at heart on the side of truth. – Ralph Waldo Emerson, “Worship,” The Conduct of Life, 1860

Physiological response to thinking and to pain is the same; and man is not given to hurting himself. – Martin H. Fischer (1879–1962)