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

Every body continues in its state of rest, or of uniform motion in a right line, unless it is compelled to change that state by forces impressed upon it.

If I have done the public any service, it is due to my patient thought.

To me there has never been a higher source of earthly honor or distinction than that connected with advances in science.

To myself I am only a child playing on the beach, while vast oceans of truth lie undiscovered before me.

This most beautiful system [The Universe] could only proceed from the dominion of an intelligent and powerful Being.

If I have seen further it is by standing on the shoulders of giants.

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

I keep the subject of my inquiry constantly before me, and wait till the first dawning opens gradually, by little and little, into a full and clear light.

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

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

To me there has never been a higher source of earthly honour or distinction than that.

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

I can calculate the motion of heavenly bodies, but not the madness of people.

To me there has never been a higher source of earthly honour or distinction than that connected with advances in science.

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

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