We should not pretend to understand the world only by the intellect; we apprehend it just as much by feeling. Therefore the judgment of the intellect is, at best, only a half-truth.
A man paints with his brains and not with his hands.
The more powerful and original a mind, the more it will incline towards the religion of solitude.
Two qualities are indispensable: first, an intellect that, even in the darkest hour, retains some glimmerings of the inner light which leads to truth; and second, the courage to follow this faint light wherever it may lead.
There is a wisdom of the head, and a wisdom of the heart.
A mind needs books as a sword needs a whetstone, if it is to keep its edge.