Human nature is all alike. Author: Mark Twain Copy Quote More from Mark Twain “TOM!"No answer."TOM!"No answer."What's gone with that boy, I wonder? You TOM!"…” “Now, children, I want you all to sit up just as straight and pretty as you can …” “When we remember we are all mad, the mysteries disappear and life stands explai…” “Familiarity breeds contempt and children.”