If your mind is tired, go get work in the fields!

We don't have only two eyes; we have hundreds of wonderful eyes, because there are hundreds of wonderful photographers!

Make walks in the nights to benefit from the education of silence!

History of science is a relay race, my painter friend. Copernicus took over his flag from Aristarchus, from Cicero, from Plutarch; and Galileo took that flag over from Copernicus.

Today's religions are nothing but the long-lived mythologies!

The road you travel might horribly get narrower; do not panic! Keep your spirits high; the road will get wider!

Our chair will remain empty one day, but our ideas will continue to sit on that chair! However in the very distant future, there will remain neither chair nor ideas! All will disappear!