It followed from the special theory of relativity that mass and energy are both but different manifestations of the same thing - a somewhat unfamiliar conception for the average mind. Furthermore, the equation E = mc², in which energy is put equal to mass, multiplied by the square of the velocity of light, showed that very small amounts of mass may be converted into a very large amount of energy and vice versa.

Don't think about why you question, simply don't stop questioning. Don't worry about what you can't answer, and don't try to explain what you can't know. Curiosity is its own reason. Aren't you in awe when you contemplate the mysteries of eternity, of life, of the marvelous structure behind reality? And this is the miracle of the human mind - to use its constructions, concepts, and formulas as tools to explain what man sees, feels and touches. Try to comprehend a little more each day. Have holy curiosity.

Whatever your problems in math are, I assure mine are greater.

Thought is the organizing factor in man, intersected between the causal primary instincts and the resulting actions.

One should never impose one's views on a problem; one should rather study it, and in time a solution will reveal itself.

The Revolution introduced me to art, and in turn, art introduced me to the Revolution!

I assert that the cosmic religious experience is the strongest and the noblest driving force behind scientific research.