The heart has its reasons which reason knows not.

If we submit everything to reason our religion will be left with nothing mysterious or supernatural. If we offend the principles of reason our religion will be absurd and ridiculous . . . There are two equally dangerous extremes: to exclude reason, to admit nothing but reason.

Le coeur a ses raisons que le raison ne connaît point.

Δύο υπερβολές : ν' αποκλείουμε το Λόγο, και να μη δεχόμαστε παρά μόνο το Λόγο.

The heart has its order, the mind has its own, which uses principles and demonstrations. The heart has a different one. We do not prove that we ought to be loved by setting out in order the causes of love; that would be absurd.

There are three sources of belief: reason, custom, inspiration.

People are generally better persuaded by the reasons which they have themselves discovered than by those which have come into the mind of others.

Finally, let them recognise that there are two kinds of people one can call reasonable; those who serve God with all their heart because they know Him, and those who seek Him with all their heart because they do not know Him.

Nothing is so conformable to reason as to disavow reason.