Everything we hear is an opinion, not a fact. Everything we see is a perspective, not the truth.

The difference between stupidity and genius is that genius has its limits.

The impossible could not have happened, therefore the impossible must be possible in spite of appearances.

It is always advisable to perceive clearly our ignorance.

Nobody made a greater mistake than he who did nothing because he could do only a little.

Mistakes are always forgivable, if one has the courage to admit them.

Real knowledge is to know the extent of one's ignorance.

The very essence of instinct is that it's followed independently of reason.

If you have no problems, then you have no clue to what is going.

What lies behind us and what lies ahead of us are tiny matters compared to what lives within us.

There's no sense in being precise when you don't even know what you're talking about.

The oldest, shortest words- 'yes' and 'no'- are those which require the most thought.

When I stand before God at the end of my life, I would hope that I would not have a single bit of talent left, and could say, 'I used everything you gave me'.

Knowing yourself is the beginning of all wisdom.

He who is slowest in making a promise is most faithful in its performance.

It seems essential, in relationships and all tasks, that we concentrate only on what is most significant and important.

The use of travelling is to regulate imagination by reality, and instead of thinking how things may be, to see them as they are.

The pendulum of the mind oscillates between sense and nonsense, not between right and wrong.

Turn your wounds into wisdom.

The cure for pain is in the pain.

One who deceives will always find those who allow themselves to be deceived.