Every Action Has An Equal And Opposite

Tact Is The Art Of Making A Point Without Making An Enemy.

To Explain All Nature Is Too Difficult A Task For Any One Man Or Even For Any One Age

What Goes Up Must Come Down.

Every Body Persists In A State Of Rest Or Of Uniform Motion In A Straight Line, Unless It Is Compelled To Change That State By Forces Having Impact Upon It.

Plato Is My Friend, Aristotle Is My Friend, But My Greatest Friend Is Truth.