We build too many walls and not enough bridges.
To every action there is always opposed an equal reaction.
What goes up must come down.
I do not know what I may appear to the world, but to myself I seem to have been only like a boy playing on the seashore, and diverting myself in now and then finding a smoother pebble or a prettier shell than ordinary, whilst the great ocean of truth lay all undiscovered before me.
It is the weight, not numbers of experiments that is to be regarded.
I can calculate the motion of heavenly bodies, but not the madness of people.
Truth is ever to be found in simplicity, and not in the multiplicity and confusion of things.
If I have seen further than others, it is by standing upon the shoulders of giants.
Tact is the art of making a point without making an enemy.
In the absence of any other proof, the thumb alone would convince me of God's existence.
Plato is my friend; Aristotle is my friend, but my greatest friend is truth.
My powers are ordinary. Only my application brings me success.
A man may imagine things that are false, but he can only understand things that are true, for if the things be false, the apprehension of them is not understanding.
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.
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