The hammers must be swung in cadence, when more than one is hammering the iron.

There is one basic cause of all effects.

I need not instruct you of my belief: Time gives all and takes all away ; everything changes but nothing perishes ; One only is immutable, eternal and ever endures, one and the same with itself. With this philosophy my spirit grows, my mind expands. Whereof, how r ever obscure the night may be, I await daybreak, and they who dwell in day look for night Rejoice therefore, and keep whole, if you can, and return love for love.

Truth does not change because it is, or is not, believed by a majority of the people.

There is no absolute up or down, as Aristotle taught; no absolute position in space; but the position of a body is relative to that of other bodies. Everywhere there is incessant relative change in position throughout the universe, and the observer is always at the center of things.

With luck on your side, you can do without brains.

The beginning, middle, and end of the birth, growth, and perfection of whatever we behold is from contraries, by contraries, and to contraries; and whatever contrariety is, there is action and reaction, there is motion, diversity, multitude, and order, there are degrees, succession and vicissitude.