British Christian apologist John Lennox argues that "faith conceived as belief that lacks warrant is very different from faith conceived as belief that has warrant". He states that "the use of the adjective 'blind' to describe 'faith' indicates that faith is not necessarily, or always, or indeed normally, blind". "The validity, or warrant, of faith or belief depends on the strength of the evidence on which the belief is based." "We all know how to distinguish between blind faith and evidence-based faith. We are well aware that faith is only justified if there is evidence to back it up." "Evidence-based faith is the normal concept on which we base our everyday lives."