"Let your Foods be your medicines, and your medicines your food." Hippocrates c.460 - 377 BC Father of Modern Medicine -----------------------------------You are what you eat. [Yudkin]
It is because of it's genetic. Every type animals and plants has it's own unique combination of genetic. So some flowers are tall and some short due to this reason.
There are many great, short tattoo quotes. One of my favorites is "Life goes on". Another is "Attack life, it's going to kill you anyways". Another is "Believe the impossible". All are great quotes.