In one year, each of us will lose and replace a mass of cells equal to our own body weight. It is only because these processes are closely regulated that we can recognize ourselves as the
11:03, 12 January 2018 1 0 66
Alejandro Sanchez Alvarado (Stowers Institute/HHMI): Staying Young
"It is not the critic who counts, nor the man who points out how the strong man stumbled, or where the doer of deeds could have done them better. The credit belongs to the man who is actually in the arena, whose face is marred by dust and sweat and blood; who strives valiantly; who errs and comes short again and again; who knows great enthusiasms, great devotions; who spends himself in a worthy cause; who, at the best, knows in the end the triumph of high achievement, and who, at the worst, if he fails, at least fails while daring greatly, so that his place shall never be with those timid souls who hiker on snowy mountain know neither victory nor defeat."