The plain man is familiar with blindness and deafness, and knows from his everyday experience that the look of things is influenced by his senses; but it never occurs to him to regard the whole world as the creation of his senses. Ernst Mach
There is a loud cry in these days for clues that shall guide the plain man through the vast bewildering labyrinth of printed volumes. John Morley, 1st Viscount Morley of Blackburn
Can you tell a plain man the road to heaven? Certainly, turn at once to the right, and then go straight forward. William Wilberforce