what will i need?

A writer does it with a pen, a painter with a brush
A photographer simply shuts his right eye...
A player does it with his spirits, a teacher with his knowledge
A mother does it with her care, a father with his understanding

A mechanic uses his skill
Sachin uses his bat, Anand uses his brain
An Engineer uses his plan.

Newton needed an apple, Archimedes needed a bath

What will i need?