Each problem that I solved became a rule, which served afterwards to solve other problems.
Descartes

Divide each difficulty into as many parts as is feasible and necessary to resolve it.
Descartes

Conquer yourself rather than the world.
Descartes

I closed my mouth and spoke to you in a hundred silent ways.
Rumi

And you, when will you begin that long journey into yourself.
Rumi

Raise your words, not voice. It is rain that grows flowers, not thunder.
Rumi

All is flux, nothing stays still.
Plato

I'm trying to think, don't confuse me with facts.
Plato

Writing is the geometry of the soul.
Plato