Albert Bigelow Paine,
The Boys' Life of Mark Twain — Chapter 66
(1916)
“ He looked so strong, and full of color and vitality. One could not believe that his words held a prophecy. Yet the pains recurred with increasing frequency and severity; his malady, angina pectoris, was making progress. And how bravely he bore it all! He never complained, never bewailed. I have seen the fierce attack crumple him when we were at billiards, but he would insist on playing in his turn, bowed, his face white, his hand digging at his breast. ”
