He who thinks half-heartedly will not believe in God; but he who really thinks has to believe in God.

Plato is my friend, Aristotle is my friend, but my greatest friend is truth.

If I have ever made any valuable discoveries, it has been due more to patient attention, than to any other talent

As a blind man has no idea of colors, so have we no idea of the manner by which the all-wise God perceives and understands all things

There are more sure marks of authenticity in the Bible that in any profane history

To explain all nature is too difficult a task for any one man or even for any one age it is much better to do a little with certainty and leave the rest for others who come after you