“[I]n science we have to be particularly cautious about 'why' questions. When we ask, 'Why?' we usually mean 'How?' If we can answer the latter, that generally suffices for our purposes. For example, we might ask: 'Why is the Earth… — Lawrence M. Krauss Copy Share Image
![“[I]n science we have to be particularly cautious about 'why' questions. When we ask, 'Why?' we usually mean 'How?' If we can answer the latter, that generally suffices for our purposes. For example, we might ask: 'Why is the Earth 93 million miles from the Sun?' but what we really probably mean…” quote by Lawrence M. Krauss](https://sms4smile.com/quotes/img-quotes/564/lawrence-m-krauss-2566_purpose_i-n-science-we-have-to-be-particularly-c_1080225.jpg)