<p>Put your hand on a hot stove for a minute$$$ and it seems like an hour. Sit with a pretty girl for an hour$$$ and it seems like a minute. That's relativity.</p>

<p>Do not grow old$$$ no matter how long you live. Never cease to stand like curious children before the Great Mystery into which we were born.</p>

<p>Now he has departed from this strange world a little ahead of me. That means nothing. People like us$$$ who believe in physics$$$ know that the distinction between past$$$ present$$$ and future is only a stubbornly persistent illusion.</p>

<p>The bigotry of the nonbeliever is for me nearly as funny as the bigotry of the believer.</p>

<p>It has become appallingly obvious that our technology has exceeded our humanity.</p>

<p>Like all great travellers$$$ I have seen more than I remember and remember more than I have seen.</p>

<p>A house divided cannot stand.</p>

<p>All generalizations are false$$$ including this one.</p>

<p>Youth is a blunder; manhood a struggle; old age a regret.</p>

<p>It is perilous to live past the end of your myth.</p>