Beware of dissipating your powers; strive constantly to concentrate them.

Experiments are mediators between nature and idea.

Many people take no care of their money till they come nearly to the end of it, and others do just the same with their time.

A noble person attracts noble people, and knows how to hold on to them.

Misunderstandings and neglect create more confusion in this world than trickery and malice. At any rate, the last two are certainly much less frequent.

I respect the man who knows distinctly what he wants.

Nothing should be valued higher than the value of the day.