John B. S. Haldane

The wise man regulates his conduct by the theories both of religion and science. But he regards these theories not as statements of ultimate fact but as art-forms.

I think, however, that so long as our present economic and national systems continue, scientific research has little to fear.

Would I lay down my life to save my brother? No, but I would to save two brothers or eight cousins.

Before I die, I will preach to the Muslims in the Arab world. I will preach in Egypt, Lebanon, Syria and Iran. I will preach in Tehran. I will do it under the umbrella of God. And see its impact.

People say, 'Where do you live?' and I say that theoretically, I live in London, but basically that's just where I go to change my suitcase. Otherwise, I'm always flying somewhere.

If my house was on fire, I can't compromise about which part of the house I'm going to save. You save the whole house or it will all burn down. We either save this country or we do not.