The acquisition of knowledge is always of use to the intellect, because it may thus drive out useless things and retain the good. For nothing can be loved or hated unless it is first known.

He who possesses most must be most afraid of loss.

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.

He who does not oppose evil......commands it to be done.

In rivers, the water that you touch is the last of what has passed and the first of that which comes; so with present time.

Art is the queen of all sciences communicating knowledge to all the generations of the world.

I awoke only to find that the rest of the world was still asleep.

The mind that engages in subjects of too great variety becomes confused and weakened.

Marriage is like putting your hand into a bag of snakes in the hope of pulling out an eel.

Truth at last cannot be hidden. Dissimulation is of no avail. Dissimulation is to no purpose before so great a judge. Falsehood puts on a mask. Nothing is hidden under the sun.

Many have made a trade of delusions and false miracles, deceiving the stupid multitudes.

Anyone who conducts an argument by appealing to authority is not using his intelligence; he is just using his memory.

Details make perfection, and perfection is not a detail.

The painter will produce pictures of little merit if he takes the works of others as his standard.

As every divided kingdom falls, so every mind divided between many studies confounds and saps itself.

Man has much power of discourse which for the most part is vain and false; animals have but little, but it is useful and true, and a small truth is better than a great lie.

If you find from your own experience that something is a fact and it contradicts what some authority has written down, then you must abandon the authority and base your reasoning on your own findings.