Argument is conclusive, but it does not remove doubt, so that the mind may rest in the sure knowledge of the truth, unless it finds it by the method of experiment.

Knowledge of languages is the doorway to wisdom.

Cease to be ruled by dogmas and authorities; look at the world!

It is easier for a man to burn down his own house than to get rid of his prejudices.

The strongest arguments prove nothing so long as the conclusions are not verified by experience. Experimental science is the queen of sciences and the goal of all speculation.

To ask the proper question is half of knowing.

Argument is conclusive, but it does not remove doubt.

A man is crazy who writes a secret in any other way than one which will conceal it from the vulgar.

Mathematics is the gate and key to science.

A little learning is a dangerous thing but none at all is fatal.

The conquest of learning is achieved through the knowledge of languages.

Focus on keeping faith and growing your roots of light so strong and deep that no one, not even yourself, can make you believe something about yourself that is not good for your soul.

Of course, we avoid death. To know something is inevitable is one thing. To accept, to truly feel it... that's different.

A thousand things can prove me right and one can prove me wrong.

Be ready for when your time comes, you will have that window of opportunity, so seize the moment and capitalise on it.

I want to do a musical movie. Like Evita, but with good music.

Let your mind become clear like a still forest pool.

If you don't drink coffee, I am suspicious of your character and will not invite you to my Italian lake home.

But the good deed, through the ages Living in historic pages, Brighter grows and gleams immortal, Unconsumed by moth or rust.

I came in to win, you know. This is why I stay up late while other people are sleeping.

What counts as rational argumentation is as historically determined and as context-dependent, as what counts as good French.