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Isaac Newton

Quotes by Sir Isaac Newton, English mathematician, physicist, and astronomer who laid the foundations of classical mechanics.

To every action there is always opposed an equal reaction.

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

No great discovery was ever made without a bold guess.

Tact is the knack of making a point without making an enemy.

Truth is ever to be found in simplicity, and not in the multiplicity and confusion of things.

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

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

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