As I visualize the new, I become dissatisfied with the old.

A happy life, a life making full use of all our potential is and must be a balanced life. The obstacles to it are mainly illusory; most of our limitations are self-imposed.

Less fear; more hope: just four little four-letter words, but when they are vividly felt as emotion, they are behavior changing, life changing, world-changing.

I was going to be a memory when I grew up.

Deteriorated science is a cult, so is imitative or deteriorated Sufism.

When he said someone had "died", Erdős meant that the person had stopped doing mathematics. When he said someone had "left", the person had died.

My loss may shine yet goodlier than your gain When Time and God give judgment.

I always look back to my first Olympic medal in 2004 in Athens. I was very new to the sport, and it was my first big win at the Olympics.

No one will be alive by the last book. In fact, they all die in the fifth. The sixth book will be just a thousand-page description of snow blowing across the graves.

It doesn’t matter how old I get, but as long as I continue to live I’ll always discover something new about myself.

In the realm of ideas everything depends on enthusiasm... in the real world all rests on perseverance.

I have for many years made it a practice to read through the Bible once every year.

Each year is a new year.