To be humane, we must ever be ready to pronounce that wise, ingenious and modest statement 'I do not know'.

Galileo Galilei (1564 CE-1642 CE), Galileo di Vincenzo Bonaiuti de' Galilei was an Italian astronomer, physicist and engineer, sometimes described as a polymath, from Pisa. Galileo has been called the "father of observational astronomy", the "father of modern physics",the "father of the scientific method",and the "father of modern science"