Copleston, S.J., quotes, on p. 164 of A History of Philosophy (vol. 4): Descartes to Leibniz, the following from Pascal's Pensées, S142/L110:
Nous connaissons la vérité non seulement par la raison mais encore par le cœur. C'est de cette dernière sorte que nous connaissons les premiers principes…
We know truth not only by the reason but also by the heart. It is in this second way that we know the first principles.
Pascal's cœur thus seems akin to Aristotle's νόος or the Scholastics' intellectus:
Magna Moralia I, c. 34, 1197a20-23:
Intelligence [intellectus, νοῦς] deals with the principles [ἀρχὰς] of intelligibles and of beings. For science [scientia, ἐπιστήμη] deals with beings that have proof [ἀποδείξεως], but the principles are without proof [ἀναπόδεικτοι], so that science would not deal with principles; rather intelligence would.
Is this true?