We are to admit no more causes of natural things than such as are both true and sufficient to explain their appearances.

All knowledge and understanding of the Universe was no more than playing with stones and shells on the seashore of the vast imponderable ocean of truth.

To explain all nature is too difficult a task for any one man or even for any one age

What we know is a drop, what we don't know is an ocean.

In the absence of any other proof, the thumb alone would convince me of God's existence.

If the ancient churches, in debating and deciding the greatest mysteries of religion, knew nothing of these two texts, I understand not why we should be so fond of them now the debate is over.

Philosophy is such an impertinently litigious lady that a man had as good be engaged in lawsuits as have to do with her.