tv/ movies: who shipped his academy award oscar back to his father's hardware store?

Questions

Who said 'Everything must either be or not be, whether in the present or in the future' ?

Who said 'Give me a firm place to stand and I will move the Earth' ?

Who said 'The greater our knowledge increases, the more our ignorance unfolds' ?

Who said 'The way of the warrior is the resolute acceptance of death' ?

Who said the line "Dr Livingstone, I presume!" ?