Do not let yourself be tainted with a barren skepticism.

It is better to see once than to hear a hundred times.

We are all passengers aboard one ship, the Earth, and we must not allow it to be wrecked. There will be no second Noah's Ark.

If what you have done yesterday still looks big to you. You haven't done much today.

If not me, who? And if not now, when?

The threat of environmental crisis is the 'international disaster key' to unlock the New World Order.

Peace is not unity in similarity but unity in diversity, in the comparison and conciliation of differences.

Science brings men nearer to God.

Oh my goodness the mystery that has prompted my objective. My quality lies exclusively in my tirelessness.

Whatever your career may be, do not let yourselves become tainted by a deprecating and barren scepticism.

Chance favours the trained mind.

The flavor of wine is like delicate poetry.

The universe is asymmetric.

Science and Peace will triumph over Ignorance and War...

When one works and imagines and dreams of nothing else than the search for answers that God has posed, it is difficult to be so still.

My strength lies solely in my tenacity.

Will opens the door to success, both brilliant and happy.

It is surmounting difficulties that make heroes.

Do not put forward anything that you cannot prove by experimentation.