Eureka: Gravitational, relativity of an evolutionary kind

Euraka, Eureka, Archimedes exclaimed
As he jumped in a bath, for which he is famed
How would he describe, was the problem he faced
No need to describe, the water displaced

I think therefore I am, Descartes once said
And he thought, therefore he was every thought in his head
Every thought, every impulse that entered his brain
Was who he was and kept him sane

Newtons revelations started with an apple
Thoughts in his mind with which he would grapple
They floated around, then dropped to Earth
The theory of gravity had its birth

Survival of the fittest was Darwin's brainchild
How humans evolved from out of the wild
The tadpole, the frog, the monkey, the man
Darwin's foresight an evolutionary plan

All logical thought was once in the dark
It took a genius to help it embark
The genius long gone, it's now common thought
The things they discovered are the things that we're taught

Relatively speaking

Einstein proclaimed E= mc squared
Before his conclusions, nobody cared
He offered his conjecture, he really knew
Before his existence, we didn't have a clue

His life was filled with deep contemplation
Of how we move forward, it's all in relation
For every action there's an equal reaction
One hundred percent, or whole as a fraction

The planets revolving at the same speed
The species evolving, together indeed
He looked for the answers, always seeking
Einstein delivered, relatively speaking

In Darwin we trust

Thank Darwin for his knowledge imparted
It means so much to know how we started
Thank god, for his contingency plan
Had Darwin not questioned how we began

Our lifes would still be filled with fantasy and fear
A misty conclusion to how we got here
If Darwin was lazy, oh god if he'd skived
We would still be wondering how we arrived

Darwin he travelled and made observations
Of species behaviour in distant locations
The species behaviour dispelled all illusions
He explained what he found, we drew our conclusions

His explanations left us with little doubt
Of our existence of what we're about
A reluctant messiah, who's life was a must
In the 21st century, in Darwin we trust