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

Bad books engender bad habits, but bad habits engender good books.

Whenever anyone has offended me, I try to raise my soul so high that the offense cannot reach it.

Nothing is made from nothing.

To think? That’s it. It is thought. This alone cannot be detached from me. I am, I exist; that is certain.

To live well is to live concealed.

It is best not to go on for great quest for truth , it will only make you miserable

The dreams we imagine when we are asleep should not in any way make us doubt the truth of the thoughts we have when we are awake.

The destruction of the foundations necessarily brings down the whole edifice.

For to be possessed of a vigorous mind is not enough; the prime requisite is rightly to apply it.

For the very fact that my knowledge is increasing little by little is the most certain argument for its imperfection.

At last I will devote myself sincerely and without reservation to the general demolition of my opinions.

I had become aware, as early as my college days, that no opinion, however absurd and incredible can be imagined, that has not been held by one of the philosophers.

To know what people really think, pay attention to what they do, rather than what they say.

Let whoever can do so deceive me, he will never bring it about that I am nothing, so long as I continue to think I am something.

Am I so tied to a body and senses that I am incapable of existing without them?

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

The nationalism and the protectionism that was built into the Mexican Revolution in 1910 and that characterized the Mexican attitude to the United States for much of the 20th century were difficult to overcome. But that actually has occurred. And the cooperation.

We should not feel embarrassed by our difficulties, only by our failure to grow anything beautiful from them.

They see how dramatic U.S. has to be put this kind of shame on its own – cannot handle the situation. Or show such a difficulty with this liberal ideas. Men or women created equal. And to defend those very essential ideas.

I suggest that there is a splendid way out of the difficulty of marriage, and that is my way – stay out.

The difficulty of saying I-a phrase from the East German novelist Christa Wolf. But once having said it, as we realize the necessity to go further, isn’t there a difficulty of saying ‘we’? You cannot speak for me.

I soon began to sense a fundamental perceptual difficulty among male scholars (and some female ones) for which ‘sexism’ is too facile a term. It is really an intellectual defect, which might be termed ‘patrivincialism’ or patrochialism.

And this is difficult if you have not entirely persuaded yourself. It is especially tricky to do this if you are also naked, and making two cups of coffee.

Honestly, I’ve always had difficulty relaxing, unwinding and going to bed – that kind of stuff.