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To emphasize only the beautiful seems to me to be like a mathematical system that only concerns itself with positive numbers.

Enthusiasm is the divine particle in our composition: with it we are great, generous, and true; without it, we are little, false, and mean.

Only the weak are cruel. Gentleness can only be expected from the strong.

Let's make math fun and sexy and glamorous. Smart is sexy, that's one of my main messages.

My talent is numbers.

Nothing is so strong as gentleness, nothing so gentle as real strength.

But sweetly and discreetly love passes from person to person, from heart to heart, or it is nothing worth.

All noble enthusiasms pass through a feverish stage, and grow wiser and more serene.

Goodness means the highest degree of popularity.