“He who loves practice without theory is like the sailor who boards ship without a rudder and compass and never knows where he may cast.”

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.

The five senses are the ministers of the soul.

Art is never finished, only abandoned.

Reprove your friend in secret and praise him openly.

Where the spirit does not work with the hand, there is no art.

The right thing to do and the hard thing to do are usually the same.

When the darkness closes in, push back.

How tremendously brave to be shattered in a way that makes stained-glass windows from the pain.

If you follow your heart, you’re going to find that it is often extremely inconvenient.

Extraordinary results are directly determined by how narrow you can make your focus.

The more you go to your limits, the more your limits will expand.

Earn your wings by letting go.

I dare you to watch this and not be changed.