Intervals and other types of speed work are essential to improve running speed.

To put it another way, Michael Jordan was a gym rat.

I think he had a wake-up call. It's a different kind of race, and I think maybe he didn't take it quite as seriously as he might have, but you can bet he learned a lot of lessons.

You have to forget your last marathon before you try another. Your mind can't know what's coming.

I admire runners older than I - they are now my heroes. I want to be like them as I grow older.

You have to know your body. It's part of the beauty of the training process, and once you've determined how much your body and mind can take, you can then begin to reach your potential.

Running a marathon is just like reading a good book. After a while you're just not conscious of the physical act of reading.

Yes, winning the gold medal was undoubtedly the biggest day of my career - mostly because I won the way I had prepared to run it. It was a totally satisfying experience.

A good athlete always mentally replays a competition over and over, even in victory, to see what might be done to improve the performance the next time.

Why couldn't Pheidippides have died at 20 miles?

Be willing to move forward and find out what happens next.

Friends? Your friends? If you lock them together in a room with no food for a week…Then you could see what it is, friends! …

I felt like some part of my soul was ripped out and put under a microscope for criticizing.

Always walk away from a fight. Then ambush.

I may be president of the United States, but my private life is nobody's damned business.

Sometimes we wish the world could cry and tell us about that which made it pregnant with fear-filling grandeur. Sometimes we wish our own heart would speak of that which made it heavy with wonder.

If we will only think, we shall begin to thank.

Most of us waste our energy through chattering - endlessly chattering, gossiping, criticising, backbiting.

For me, the battle isn't Hillary [Clinton] vs. [Bernie] Sanders. And I understand that for some people that's the battle. But for me, more than anything, it's stopping a Republican president.

Week after week, the heads of Red Army Intelligence received updates on the Wehrmacht's preparations.

The cynics were watchdogs terrifying malefactors. They tried to expose falseness and conceit. That's why their name is still spoken with a snarl.