John Dalton

Matter, though divisible in an extreme degree, is nevertheless composed of certain simple particles, or atoms, which are not further divisible.

The relative weights of the ultimate particles of all simple bodies are determined by the laws of chemical combination.

Chemical analysis and synthesis go no farther than to the separation of particles from each other, and to their reunion.

The atoms of bodies are not changed by chemical combination, but merely separated from each other, and again united.

Nature's great book is written in mathematical symbols.

I see no reason to believe that the atoms of different elements are not perfectly distinct and separate entities.

The most important thing in life is to learn how to give out love, and to let it come in.

The greatest discovery of all time is that a person can change his future by merely changing his attitude.

Science is nothing but trained and organized common sense.

The mind is its own place, and in itself can make a heaven of hell, a hell of heaven.

The only true wisdom is in knowing you know nothing.

Life is not a problem to be solved, but a reality to be experienced.

The unexamined life is not worth living.

To be yourself in a world that is constantly trying to make you something else is the greatest accomplishment.

The only way to do great work is to love what you do.

What we think, we become.

All that we see or seem is but a dream within a dream.

The best way to predict the future is to create it.

Do not go where the path may lead, go instead where there is no path and leave a trail.

The journey of a thousand miles begins with a single step.