“We have to do this.“ The Big Bang Theory quote S01E09 Leonard Hofstadter

Leonard Hofstadter: We have to do this. Sheldon Cooper: No, we have to take in nourishment, expel waste and breathe in enough oxygen to keep our cells from dying. Everything else is purely optional. The Big Bang Theory The Cooper-Hofstadter Polarization Season 1 Episode 9 17 Mar. 2008