To create and to annihilate material substance, cause it to aggregate in forms according to his desire, would be the supreme manifestation of the power of Man's mind, his most complete triumph over the physical world.
The mind generally takes up various objects, runs into all sorts of things. That is the lower state. There is a higher state of the mind, when it takes up one object and excludes all others.
When you completely extract yourself from anything familiar, you start reverting back to that state of mind where you're having conversations with yourself, and that's where the weirdest and most honest ideas come from.
A well organized education should not be one which prepares students for a good remuneration alone. It should be one that can help and guide them towards acquiring clear thinking, a fruitful mind, and an elevated spirit.
Just as the body has its progress and decadence, so also has the mind, and, therefore, the mind is not the soul, because the soul can neither decay nor degenerate.
In the matter of physics, the first lessons should contain nothing but what is experimental and interesting to see. A pretty experiment is in itself often more valuable than twenty formulae extracted from our minds.
There is a certain frame of mind to which a cemetery is, if not an antidote, at least an alleviation. If you are in a fit of the blues, go nowhere else.