“In rivers, the water that you touch is the last of what has passed and the first of that which comes; so with present time.”

Realize that everything connects to everything else.

He who thinks little errs much.

Tears come from the heart and not from the brain.

Ask advice of him who governs himself well.

Learning is the only thing the mind never exhausts, never fears, and never regrets.

One has no right to love or hate anything if one has not acquired a thorough knowledge of its nature. Great love springs from great knowledge of the beloved object, and if you know it but little you will be able to love it only a little or not at all.

Nature never breaks her own laws.

All sciences are vain and full of errors that are not born of Experience, the mother of all Knowledge.

The knowledge of all things is possible.

Poor is the pupil who does not surpass his master.

I am not poor. Poor are those who desire many things.

Nature is the source of all true knowledge. She has her own logic, her own laws, she has no effect without cause nor invention without necessity.

Art lives from constraints and dies from freedom.

A diamond is just a lump of coal that stuck to its job.

Nothing can be loved or hated unless it is first understood.

Being willing is not enough. We must do.