Divide each difficulty into as many parts as is feasible and necessary to resolve it.
The reading of all good books is like a conversation with the finest minds of past centuries.
Perfect numbers, like perfect men, are very rare.
It is only prudent never to place complete confidence in that by which we have even once been deceived.
The mind cannot comprehend the universe; the universe is too large.
It is not enough to understand, you must also act.
The senses deceive from time to time, and it is prudent never to trust wholly those who have deceived us even once.
Common sense is the most widely shared commodity in the world, for every man is convinced that he is well supplied with it.
Common sense is the most widely shared commodity in the world, for every man is convinced that he is well supplied with it.
Travelling is almost like talking with men of other centuries.
To know what people really think, pay regard to what they do, rather than what they say.
We do not describe the world we see, we see the world we can describe.
I am accustomed to sleep and in my dreams to imagine the same things that lunatics imagine when awake.
The first precept was never to accept a thing as true until I knew it as such without a single doubt.
Except our own thoughts, there is nothing absolutely in our power.
In order to improve the mind, we ought less to learn than to contemplate.
The greatest wisdom consists in knowing one's own follies.
To be wrong is nothing unless you continue remembering it.
We must make haste then, not only because we are daily nearer to death, but also because the conception of things and the understanding of them cease first.
The power of judging aright and of distinguishing the true from the false, which is properly what is called good sense or reason, is by nature equal in all men.
The senses are of two kinds; one is natural, namely, the five; the other is spiritual.
It is necessary to rouse oneself from sleep and to apply oneself to study with a fresh mind.
The mind can be rightly controlled only by controlling the body.
The good of the intellect is the acquisition of knowledge, and the good of the will is the achievement of moral perfection.
The greatest minds are capable of the greatest vices as well as of the greatest virtues.
If you would be a real seeker after truth, it is necessary that at least once in your life you doubt, as far as possible, all things.
Good sense is of all things in the world the most equally distributed, for everybody